diff --git a/src/main/java/com/kospo/svcm/controller/PrcsController.java b/src/main/java/com/kospo/svcm/controller/PrcsController.java
index 1ca017c..252d304 100644
--- a/src/main/java/com/kospo/svcm/controller/PrcsController.java
+++ b/src/main/java/com/kospo/svcm/controller/PrcsController.java
@@ -50,12 +50,32 @@ public class PrcsController {
                             {CustomErrorResponse.class })))
     })
     @GetMapping("/prcs/{prcsNo}")
-    public ResponseEntity findSearchPage(
+    public ResponseEntity findDetail(
             @Parameter(description = "가격조사번호") @PathVariable(required = false) String prcsNo
     ) {
         return ResponseEntity.ok(prcsService.findDetail(prcsNo));
     }
 
+    @Operation(summary = "가격조사 상세조회 (apprNo)", description = "결재번호로 조회")
+    @ApiResponses({
+            @ApiResponse(description = "Success", responseCode = "200",
+                    content = @Content(mediaType = "application/json",
+                            schema = @Schema(oneOf =
+                                    {PrcsResponse.class}))),
+            @ApiResponse(description = "Not found", responseCode = "404",
+                    content = @Content(mediaType = "text/plain", schema = @Schema(oneOf =
+                            {String.class}))),
+            @ApiResponse(description = "Internal Error", responseCode = "500",
+                    content = @Content(mediaType = "application/json", schema = @Schema(oneOf =
+                            {CustomErrorResponse.class })))
+    })
+    @GetMapping("/prcs/approval/{apprNo}")
+    public ResponseEntity findByApprNoDetail(
+            @Parameter(description = "결재번호") @PathVariable(required = false) String apprNo
+    ) {
+        return ResponseEntity.ok(prcsService.findByApprNoDetail(apprNo));
+    }
+
     @Operation(summary = "가격조사 조회 (페이징)", description = "전체 조회")
     @ApiResponses({
             @ApiResponse(description = "Success", responseCode = "200",
diff --git a/src/main/java/com/kospo/svcm/service/PrcsService.java b/src/main/java/com/kospo/svcm/service/PrcsService.java
index 63abbe3..035d447 100644
--- a/src/main/java/com/kospo/svcm/service/PrcsService.java
+++ b/src/main/java/com/kospo/svcm/service/PrcsService.java
@@ -26,6 +26,9 @@ public interface PrcsService {
     @Transactional
     PrcsResponse findDetail(String prcsNo);
 
+    @Transactional
+    PrcsResponse findByApprNoDetail(String apprNo);
+
     @Transactional
     PageResponse findExternalSearch(String bizNo, String cateCd, String title, String regNm, String regSdt, String regEdt, Pageable pageable);
 
diff --git a/src/main/java/com/kospo/svcm/service/impl/PrcsServiceImpl.java b/src/main/java/com/kospo/svcm/service/impl/PrcsServiceImpl.java
index adc4a9b..b31ed7d 100644
--- a/src/main/java/com/kospo/svcm/service/impl/PrcsServiceImpl.java
+++ b/src/main/java/com/kospo/svcm/service/impl/PrcsServiceImpl.java
@@ -123,6 +123,18 @@ public class PrcsServiceImpl implements PrcsService {
         }
     }
 
+    @Transactional
+    @Override
+    public PrcsResponse findByApprNoDetail(String apprNo) {
+        ApprMst apprMst = apprMstRepository.findByApprNo(apprNo);
+        Prcs prcs = apprMst.getPrcs();
+        if(prcs != null) {
+            return PrcsResponse.from(prcs);
+        } else {
+            throw new CustomException(ErrorCode.FIND_ERR);
+        }
+    }
+
     @Transactional
     @Override
     public PageResponse findExternalSearch(String bizNo, String cateCd, String title, String regNm, String regSdt, String regEdt, Pageable pageable) {