diff --git a/src/main/java/com/kamco/cd/kamcoback/postgres/repository/trainingdata/TrainingDataLabelRepositoryImpl.java b/src/main/java/com/kamco/cd/kamcoback/postgres/repository/trainingdata/TrainingDataLabelRepositoryImpl.java
index cb22f514..ae383000 100644
--- a/src/main/java/com/kamco/cd/kamcoback/postgres/repository/trainingdata/TrainingDataLabelRepositoryImpl.java
+++ b/src/main/java/com/kamco/cd/kamcoback/postgres/repository/trainingdata/TrainingDataLabelRepositoryImpl.java
@@ -772,34 +772,47 @@ public class TrainingDataLabelRepositoryImpl extends QuerydslRepositorySupport
   public TrainingDataLabelDto.CogImageResponse getCogImageUrl(
       String mapSheetNum, Integer beforeYear, Integer afterYear) {
     try {
-      // beforeYear COG URL 조회
-      String beforeCogUrl =
-          queryFactory
-              .select(
-                  Expressions.stringTemplate(
-                      "{0} || {1}", imageryEntity.cogMiddlePath, imageryEntity.cogFilename))
-              .from(imageryEntity)
-              .where(imageryEntity.scene5k.eq(mapSheetNum), imageryEntity.year.eq(beforeYear))
-              .fetchFirst();
+      // 최소 하나의 년도는 제공되어야 함
+      if (beforeYear == null && afterYear == null) {
+        throw new IllegalArgumentException("At least one year parameter (beforeYear or afterYear) must be provided");
+      }
 
-      // afterYear COG URL 조회
-      String afterCogUrl =
-          queryFactory
-              .select(
-                  Expressions.stringTemplate(
-                      "{0} || {1}", imageryEntity.cogMiddlePath, imageryEntity.cogFilename))
-              .from(imageryEntity)
-              .where(imageryEntity.scene5k.eq(mapSheetNum), imageryEntity.year.eq(afterYear))
-              .fetchFirst();
+      String beforeCogUrl = null;
+      String afterCogUrl = null;
 
-      if (beforeCogUrl == null && afterCogUrl == null) {
+      // beforeYear가 제공된 경우 COG URL 조회
+      if (beforeYear != null) {
+        beforeCogUrl =
+            queryFactory
+                .select(
+                    Expressions.stringTemplate(
+                        "{0} || {1}", imageryEntity.cogMiddlePath, imageryEntity.cogFilename))
+                .from(imageryEntity)
+                .where(imageryEntity.scene5k.eq(mapSheetNum), imageryEntity.year.eq(beforeYear))
+                .fetchFirst();
+      }
+
+      // afterYear가 제공된 경우 COG URL 조회
+      if (afterYear != null) {
+        afterCogUrl =
+            queryFactory
+                .select(
+                    Expressions.stringTemplate(
+                        "{0} || {1}", imageryEntity.cogMiddlePath, imageryEntity.cogFilename))
+                .from(imageryEntity)
+                .where(imageryEntity.scene5k.eq(mapSheetNum), imageryEntity.year.eq(afterYear))
+                .fetchFirst();
+      }
+
+      // 제공된 년도에 대해 하나도 찾지 못한 경우에만 예외 발생
+      if ((beforeYear != null && beforeCogUrl == null) && (afterYear != null && afterCogUrl == null)) {
         throw new RuntimeException(
             "COG images not found for mapSheetNum: "
                 + mapSheetNum
                 + ", years: "
-                + beforeYear
-                + ", "
-                + afterYear);
+                + (beforeYear != null ? beforeYear : "")
+                + (beforeYear != null && afterYear != null ? ", " : "")
+                + (afterYear != null ? afterYear : ""));
       }
 
       return TrainingDataLabelDto.CogImageResponse.builder()
@@ -817,9 +830,9 @@ public class TrainingDataLabelRepositoryImpl extends QuerydslRepositorySupport
           "Failed to get COG image URLs for mapSheetNum: "
               + mapSheetNum
               + ", years: "
-              + beforeYear
-              + ", "
-              + afterYear,
+              + (beforeYear != null ? beforeYear : "")
+              + (beforeYear != null && afterYear != null ? ", " : "")
+              + (afterYear != null ? afterYear : ""),
           e);
     }
   }
diff --git a/src/main/java/com/kamco/cd/kamcoback/postgres/repository/trainingdata/TrainingDataReviewRepositoryImpl.java b/src/main/java/com/kamco/cd/kamcoback/postgres/repository/trainingdata/TrainingDataReviewRepositoryImpl.java
index 956e336b..46d3b466 100644
--- a/src/main/java/com/kamco/cd/kamcoback/postgres/repository/trainingdata/TrainingDataReviewRepositoryImpl.java
+++ b/src/main/java/com/kamco/cd/kamcoback/postgres/repository/trainingdata/TrainingDataReviewRepositoryImpl.java
@@ -776,34 +776,47 @@ public class TrainingDataReviewRepositoryImpl extends QuerydslRepositorySupport
   public TrainingDataReviewDto.CogImageResponse getCogImageUrl(
       String mapSheetNum, Integer beforeYear, Integer afterYear) {
     try {
-      // beforeYear COG URL 조회
-      String beforeCogUrl =
-          queryFactory
-              .select(
-                  Expressions.stringTemplate(
-                      "{0} || {1}", imageryEntity.cogMiddlePath, imageryEntity.cogFilename))
-              .from(imageryEntity)
-              .where(imageryEntity.scene5k.eq(mapSheetNum), imageryEntity.year.eq(beforeYear))
-              .fetchFirst();
+      // 최소 하나의 년도는 제공되어야 함
+      if (beforeYear == null && afterYear == null) {
+        throw new IllegalArgumentException("At least one year parameter (beforeYear or afterYear) must be provided");
+      }
 
-      // afterYear COG URL 조회
-      String afterCogUrl =
-          queryFactory
-              .select(
-                  Expressions.stringTemplate(
-                      "{0} || {1}", imageryEntity.cogMiddlePath, imageryEntity.cogFilename))
-              .from(imageryEntity)
-              .where(imageryEntity.scene5k.eq(mapSheetNum), imageryEntity.year.eq(afterYear))
-              .fetchFirst();
+      String beforeCogUrl = null;
+      String afterCogUrl = null;
 
-      if (beforeCogUrl == null && afterCogUrl == null) {
+      // beforeYear가 제공된 경우 COG URL 조회
+      if (beforeYear != null) {
+        beforeCogUrl =
+            queryFactory
+                .select(
+                    Expressions.stringTemplate(
+                        "{0} || {1}", imageryEntity.cogMiddlePath, imageryEntity.cogFilename))
+                .from(imageryEntity)
+                .where(imageryEntity.scene5k.eq(mapSheetNum), imageryEntity.year.eq(beforeYear))
+                .fetchFirst();
+      }
+
+      // afterYear가 제공된 경우 COG URL 조회
+      if (afterYear != null) {
+        afterCogUrl =
+            queryFactory
+                .select(
+                    Expressions.stringTemplate(
+                        "{0} || {1}", imageryEntity.cogMiddlePath, imageryEntity.cogFilename))
+                .from(imageryEntity)
+                .where(imageryEntity.scene5k.eq(mapSheetNum), imageryEntity.year.eq(afterYear))
+                .fetchFirst();
+      }
+
+      // 제공된 년도에 대해 하나도 찾지 못한 경우에만 예외 발생
+      if ((beforeYear != null && beforeCogUrl == null) && (afterYear != null && afterCogUrl == null)) {
         throw new RuntimeException(
             "COG images not found for mapSheetNum: "
                 + mapSheetNum
                 + ", years: "
-                + beforeYear
-                + ", "
-                + afterYear);
+                + (beforeYear != null ? beforeYear : "")
+                + (beforeYear != null && afterYear != null ? ", " : "")
+                + (afterYear != null ? afterYear : ""));
       }
 
       return TrainingDataReviewDto.CogImageResponse.builder()
@@ -821,9 +834,9 @@ public class TrainingDataReviewRepositoryImpl extends QuerydslRepositorySupport
           "Failed to get COG image URLs for mapSheetNum: "
               + mapSheetNum
               + ", years: "
-              + beforeYear
-              + ", "
-              + afterYear,
+              + (beforeYear != null ? beforeYear : "")
+              + (beforeYear != null && afterYear != null ? ", " : "")
+              + (afterYear != null ? afterYear : ""),
           e);
     }
   }
diff --git a/src/main/java/com/kamco/cd/kamcoback/trainingdata/TrainingDataLabelApiController.java b/src/main/java/com/kamco/cd/kamcoback/trainingdata/TrainingDataLabelApiController.java
index 510f5a20..7b61329b 100644
--- a/src/main/java/com/kamco/cd/kamcoback/trainingdata/TrainingDataLabelApiController.java
+++ b/src/main/java/com/kamco/cd/kamcoback/trainingdata/TrainingDataLabelApiController.java
@@ -465,7 +465,7 @@ public class TrainingDataLabelApiController {
     return ApiResponseDto.okObject(trainingDataLabelService.saveNewPolygon(request));
   }
 
-  @Operation(summary = "COG 이미지 URL 조회", description = "변화 전/후 COG 이미지 URL을 함께 조회합니다")
+  @Operation(summary = "COG 이미지 URL 조회", description = "변화 전/후 COG 이미지 URL을 조회합니다. beforeYear와 afterYear 중 최소 하나는 필수입니다.")
   @ApiResponses(
       value = {
         @ApiResponse(
@@ -476,6 +476,7 @@ public class TrainingDataLabelApiController {
                     mediaType = "application/json",
                     schema =
                         @Schema(implementation = TrainingDataLabelDto.CogImageResponse.class))),
+        @ApiResponse(responseCode = "400", description = "년도 파라미터가 하나도 제공되지 않음", content = @Content),
         @ApiResponse(responseCode = "404", description = "이미지를 찾을 수 없음", content = @Content),
         @ApiResponse(responseCode = "500", description = "서버 오류", content = @Content)
       })
@@ -483,9 +484,9 @@ public class TrainingDataLabelApiController {
   public ApiResponseDto<TrainingDataLabelDto.CogImageResponse> getCogImageUrl(
       @Parameter(description = "도엽번호", required = true, example = "35905086") @RequestParam
           String mapSheetNum,
-      @Parameter(description = "변화 전 년도", required = true, example = "2023") @RequestParam
+      @Parameter(description = "변화 전 년도", required = false, example = "2023") @RequestParam(required = false)
           Integer beforeYear,
-      @Parameter(description = "변화 후 년도", required = true, example = "2024") @RequestParam
+      @Parameter(description = "변화 후 년도", required = false, example = "2024") @RequestParam(required = false)
           Integer afterYear) {
     return ApiResponseDto.ok(
         trainingDataLabelService.getCogImageUrl(mapSheetNum, beforeYear, afterYear));
diff --git a/src/main/java/com/kamco/cd/kamcoback/trainingdata/TrainingDataReviewApiController.java b/src/main/java/com/kamco/cd/kamcoback/trainingdata/TrainingDataReviewApiController.java
index 89d4e37d..425bb741 100644
--- a/src/main/java/com/kamco/cd/kamcoback/trainingdata/TrainingDataReviewApiController.java
+++ b/src/main/java/com/kamco/cd/kamcoback/trainingdata/TrainingDataReviewApiController.java
@@ -465,7 +465,7 @@ public class TrainingDataReviewApiController {
     return ApiResponseDto.okObject(trainingDataReviewService.saveNewPolygon(request));
   }
 
-  @Operation(summary = "COG 이미지 URL 조회", description = "변화 전/후 COG 이미지 URL을 함께 조회합니다")
+  @Operation(summary = "COG 이미지 URL 조회", description = "변화 전/후 COG 이미지 URL을 조회합니다. beforeYear와 afterYear 중 최소 하나는 필수입니다.")
   @ApiResponses(
       value = {
         @ApiResponse(
@@ -476,6 +476,7 @@ public class TrainingDataReviewApiController {
                     mediaType = "application/json",
                     schema =
                         @Schema(implementation = TrainingDataReviewDto.CogImageResponse.class))),
+        @ApiResponse(responseCode = "400", description = "년도 파라미터가 하나도 제공되지 않음", content = @Content),
         @ApiResponse(responseCode = "404", description = "이미지를 찾을 수 없음", content = @Content),
         @ApiResponse(responseCode = "500", description = "서버 오류", content = @Content)
       })
@@ -483,9 +484,9 @@ public class TrainingDataReviewApiController {
   public ApiResponseDto<TrainingDataReviewDto.CogImageResponse> getCogImageUrl(
       @Parameter(description = "도엽번호", required = true, example = "35905086") @RequestParam
           String mapSheetNum,
-      @Parameter(description = "변화 전 년도", required = true, example = "2023") @RequestParam
+      @Parameter(description = "변화 전 년도", required = false, example = "2023") @RequestParam(required = false)
           Integer beforeYear,
-      @Parameter(description = "변화 후 년도", required = true, example = "2024") @RequestParam
+      @Parameter(description = "변화 후 년도", required = false, example = "2024") @RequestParam(required = false)
           Integer afterYear) {
     return ApiResponseDto.ok(
         trainingDataReviewService.getCogImageUrl(mapSheetNum, beforeYear, afterYear));
diff --git a/src/main/java/com/kamco/cd/kamcoback/trainingdata/service/TrainingDataLabelService.java b/src/main/java/com/kamco/cd/kamcoback/trainingdata/service/TrainingDataLabelService.java
index 9e31efce..6b5696da 100644
--- a/src/main/java/com/kamco/cd/kamcoback/trainingdata/service/TrainingDataLabelService.java
+++ b/src/main/java/com/kamco/cd/kamcoback/trainingdata/service/TrainingDataLabelService.java
@@ -106,9 +106,9 @@ public class TrainingDataLabelService {
    * COG 이미지 URL 조회 (변화 전/후)
    *
    * @param mapSheetNum 도엽번호
-   * @param beforeYear 변화 전 년도
-   * @param afterYear 변화 후 년도
-   * @return 변화 전/후 COG 이미지 URL
+   * @param beforeYear 변화 전 년도 (선택적)
+   * @param afterYear 변화 후 년도 (선택적)
+   * @return 변화 전/후 COG 이미지 URL (최소 하나의 년도는 제공되어야 함)
    */
   public TrainingDataLabelDto.CogImageResponse getCogImageUrl(
       String mapSheetNum, Integer beforeYear, Integer afterYear) {
diff --git a/src/main/java/com/kamco/cd/kamcoback/trainingdata/service/TrainingDataReviewService.java b/src/main/java/com/kamco/cd/kamcoback/trainingdata/service/TrainingDataReviewService.java
index 067fea66..b81f2895 100644
--- a/src/main/java/com/kamco/cd/kamcoback/trainingdata/service/TrainingDataReviewService.java
+++ b/src/main/java/com/kamco/cd/kamcoback/trainingdata/service/TrainingDataReviewService.java
@@ -108,9 +108,9 @@ public class TrainingDataReviewService {
    * COG 이미지 URL 조회 (변화 전/후)
    *
    * @param mapSheetNum 도엽번호
-   * @param beforeYear 변화 전 년도
-   * @param afterYear 변화 후 년도
-   * @return 변화 전/후 COG 이미지 URL
+   * @param beforeYear 변화 전 년도 (선택적)
+   * @param afterYear 변화 후 년도 (선택적)
+   * @return 변화 전/후 COG 이미지 URL (최소 하나의 년도는 제공되어야 함)
    */
   public TrainingDataReviewDto.CogImageResponse getCogImageUrl(
       String mapSheetNum, Integer beforeYear, Integer afterYear) {