diff --git a/src/main/java/com/first/flash/climbing/solution/application/SolutionService.java b/src/main/java/com/first/flash/climbing/solution/application/SolutionService.java
index 9bdb9bf7..02331053 100644
--- a/src/main/java/com/first/flash/climbing/solution/application/SolutionService.java
+++ b/src/main/java/com/first/flash/climbing/solution/application/SolutionService.java
@@ -8,6 +8,7 @@
 import com.first.flash.climbing.solution.domain.dto.SolutionCreateRequestDto;
 import com.first.flash.climbing.solution.exception.exceptions.SolutionNotFoundException;
 import java.util.List;
+import java.util.UUID;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
@@ -20,7 +21,7 @@ public class SolutionService {
     private final SolutionRepository solutionRepository;
 
     @Transactional
-    public SolutionResponseDto saveSolution(final Long problemId,
+    public SolutionResponseDto saveSolution(final UUID problemId,
         final SolutionCreateRequestDto createRequestDto) {
         Solution solution = Solution.of(createRequestDto, problemId);
         return SolutionResponseDto.toDto(solutionRepository.save(solution));
@@ -28,14 +29,14 @@ public SolutionResponseDto saveSolution(final Long problemId,
 
     public Solution findSolutionById(final Long id) {
         return solutionRepository.findById(id)
-            .orElseThrow(() -> new SolutionNotFoundException(id));
+                                 .orElseThrow(() -> new SolutionNotFoundException(id));
     }
 
-    public SolutionsResponseDto findAllSolutionsByProblemId(final Long problemId) {
+    public SolutionsResponseDto findAllSolutionsByProblemId(final UUID problemId) {
         List<SolutionResponseDto> solutions = solutionRepository.findAllByProblemId(problemId)
-            .stream()
-            .map(SolutionResponseDto::toDto)
-            .toList();
+                                                                .stream()
+                                                                .map(SolutionResponseDto::toDto)
+                                                                .toList();
         return new SolutionsResponseDto(solutions, new SolutionMetaResponseDto(solutions.size()));
     }
 }
diff --git a/src/main/java/com/first/flash/climbing/solution/domain/SolutionRepository.java b/src/main/java/com/first/flash/climbing/solution/domain/SolutionRepository.java
index c1db605d..92be91f9 100644
--- a/src/main/java/com/first/flash/climbing/solution/domain/SolutionRepository.java
+++ b/src/main/java/com/first/flash/climbing/solution/domain/SolutionRepository.java
@@ -2,6 +2,7 @@
 
 import java.util.List;
 import java.util.Optional;
+import java.util.UUID;
 
 public interface SolutionRepository {
 
@@ -9,5 +10,5 @@ public interface SolutionRepository {
 
     Optional<Solution> findById(final Long id);
 
-    List<Solution> findAllByProblemId(final Long problemId);
+    List<Solution> findAllByProblemId(final UUID problemId);
 }
diff --git a/src/main/java/com/first/flash/climbing/solution/infrastructure/SolutionJpaRepository.java b/src/main/java/com/first/flash/climbing/solution/infrastructure/SolutionJpaRepository.java
index 2c2be023..cd1c4764 100644
--- a/src/main/java/com/first/flash/climbing/solution/infrastructure/SolutionJpaRepository.java
+++ b/src/main/java/com/first/flash/climbing/solution/infrastructure/SolutionJpaRepository.java
@@ -3,6 +3,7 @@
 import com.first.flash.climbing.solution.domain.Solution;
 import java.util.List;
 import java.util.Optional;
+import java.util.UUID;
 import org.springframework.data.jpa.repository.JpaRepository;
 
 public interface SolutionJpaRepository extends JpaRepository<Solution, Long> {
@@ -11,5 +12,5 @@ public interface SolutionJpaRepository extends JpaRepository<Solution, Long> {
 
     Optional<Solution> findById(final Long id);
 
-    List<Solution> findByProblemId(final Long problemId);
+    List<Solution> findByProblemId(final UUID problemId);
 }
diff --git a/src/main/java/com/first/flash/climbing/solution/infrastructure/SolutionRepositoryImpl.java b/src/main/java/com/first/flash/climbing/solution/infrastructure/SolutionRepositoryImpl.java
index d3b8b676..6d12dc24 100644
--- a/src/main/java/com/first/flash/climbing/solution/infrastructure/SolutionRepositoryImpl.java
+++ b/src/main/java/com/first/flash/climbing/solution/infrastructure/SolutionRepositoryImpl.java
@@ -4,6 +4,7 @@
 import com.first.flash.climbing.solution.domain.SolutionRepository;
 import java.util.List;
 import java.util.Optional;
+import java.util.UUID;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Repository;
 
@@ -24,7 +25,7 @@ public Optional<Solution> findById(final Long id) {
     }
 
     @Override
-    public List<Solution> findAllByProblemId(final Long problemId) {
+    public List<Solution> findAllByProblemId(final UUID problemId) {
         return solutionJpaRepository.findByProblemId(problemId);
     }
 }
diff --git a/src/main/java/com/first/flash/climbing/solution/ui/SolutionController.java b/src/main/java/com/first/flash/climbing/solution/ui/SolutionController.java
index 543dbecc..b99cb1ff 100644
--- a/src/main/java/com/first/flash/climbing/solution/ui/SolutionController.java
+++ b/src/main/java/com/first/flash/climbing/solution/ui/SolutionController.java
@@ -8,6 +8,7 @@
 import io.swagger.v3.oas.annotations.responses.ApiResponse;
 import io.swagger.v3.oas.annotations.responses.ApiResponses;
 import io.swagger.v3.oas.annotations.tags.Tag;
+import java.util.UUID;
 import lombok.RequiredArgsConstructor;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
@@ -32,7 +33,7 @@ public class SolutionController {
         @ApiResponse(responseCode = "404", description = "해설을 찾을 수 없음")
     })
     @GetMapping("problems/{problemId}/solutions")
-    public ResponseEntity<SolutionsResponseDto> getSolutions(@PathVariable final Long problemId) {
+    public ResponseEntity<SolutionsResponseDto> getSolutions(@PathVariable final UUID problemId) {
         SolutionsResponseDto response = solutionService.findAllSolutionsByProblemId(
             problemId);
 
@@ -44,10 +45,11 @@ public ResponseEntity<SolutionsResponseDto> getSolutions(@PathVariable final Lon
         @ApiResponse(responseCode = "201", description = "성공적으로 해설 영상을 업로드함")
     })
     @PostMapping("problems/{problemId}/solutions")
-    public ResponseEntity<SolutionResponseDto> createSolution(@PathVariable final Long problemId,
+    public ResponseEntity<SolutionResponseDto> createSolution(@PathVariable final UUID problemId,
         @RequestBody final SolutionCreateRequestDto solutionCreateRequestDto) {
 
         return ResponseEntity.status(HttpStatus.CREATED)
-            .body(solutionService.saveSolution(problemId, solutionCreateRequestDto));
+                             .body(
+                                 solutionService.saveSolution(problemId, solutionCreateRequestDto));
     }
 }
diff --git a/src/test/java/com/first/flash/climbing/solution/application/SolutionServiceTest.java b/src/test/java/com/first/flash/climbing/solution/application/SolutionServiceTest.java
index d864419d..89a85334 100644
--- a/src/test/java/com/first/flash/climbing/solution/application/SolutionServiceTest.java
+++ b/src/test/java/com/first/flash/climbing/solution/application/SolutionServiceTest.java
@@ -11,12 +11,13 @@
 import com.first.flash.climbing.solution.domain.dto.SolutionCreateRequestDto;
 import com.first.flash.climbing.solution.exception.exceptions.SolutionNotFoundException;
 import com.first.flash.climbing.solution.infrastructure.FakeSolutionRepository;
+import java.util.UUID;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 
 class SolutionServiceTest {
 
-    private final static Long DEFAULT_PROBLEM_ID = 1L;
+    private final static UUID DEFAULT_PROBLEM_ID = UUID.randomUUID();
     private final static Long NON_EXISTENT_SOLUTION_ID = 999L;
 
     private SolutionRepository solutionRepository;
@@ -87,4 +88,4 @@ void init() {
             softly.assertThat(solutionsResponse.meta().count()).isEqualTo(2);
         });
     }
-}
\ No newline at end of file
+}
diff --git a/src/test/java/com/first/flash/climbing/solution/infrastructure/FakeSolutionRepository.java b/src/test/java/com/first/flash/climbing/solution/infrastructure/FakeSolutionRepository.java
index ed171fc6..fddd470c 100644
--- a/src/test/java/com/first/flash/climbing/solution/infrastructure/FakeSolutionRepository.java
+++ b/src/test/java/com/first/flash/climbing/solution/infrastructure/FakeSolutionRepository.java
@@ -6,11 +6,12 @@
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
+import java.util.UUID;
 
 public class FakeSolutionRepository implements SolutionRepository {
 
     private final static Long DEFAULT_OPTIONAL_WEIGHT = 0L;
-    private final static Long DEFAULT_PROBLEM_ID = 1L;
+    private final static UUID DEFAULT_PROBLEM_ID = UUID.randomUUID();
 
     final private Map<Long, Solution> db = new HashMap<>();
     private Long id = 0L;
@@ -32,9 +33,9 @@ public Optional<Solution> findById(Long id) {
     }
 
     @Override
-    public List<Solution> findAllByProblemId(Long problemId) {
+    public List<Solution> findAllByProblemId(final UUID problemId) {
         return db.values().stream()
-            .filter(solution -> solution.getProblemId().equals(problemId))
-            .toList();
+                 .filter(solution -> solution.getProblemId().equals(problemId))
+                 .toList();
     }
 }