diff --git a/src/main/java/com/moplus/moplus_server/domain/concept/repository/ConceptTagRepository.java b/src/main/java/com/moplus/moplus_server/domain/concept/repository/ConceptTagRepository.java
index 323bdef6..d00f87b2 100644
--- a/src/main/java/com/moplus/moplus_server/domain/concept/repository/ConceptTagRepository.java
+++ b/src/main/java/com/moplus/moplus_server/domain/concept/repository/ConceptTagRepository.java
@@ -23,9 +23,13 @@ default void existsByIdElseThrow(Set<Long> ids) {
 
     default List<ConceptTag> findAllByIdsElseThrow(Set<Long> ids) {
         List<ConceptTag> conceptTags = findAllById(ids);
+        List<Long> foundIds = conceptTags.stream()
+                .map(ConceptTag::getId)
+                .toList();
+
         if (conceptTags.size() != ids.size()) {
             throw new NotFoundException(ErrorCode.CONCEPT_TAG_NOT_FOUND_IN_LIST,
-                    "targetIds: " + ids + " / foundIds: " + conceptTags);
+                    "targetIds: " + ids + " / foundIds: " + foundIds);
         }
         return conceptTags;
     }
diff --git a/src/main/java/com/moplus/moplus_server/statistic/Problem/repository/ChildProblemStatisticRepository.java b/src/main/java/com/moplus/moplus_server/statistic/Problem/repository/ChildProblemStatisticRepository.java
index 31f10665..9d686502 100644
--- a/src/main/java/com/moplus/moplus_server/statistic/Problem/repository/ChildProblemStatisticRepository.java
+++ b/src/main/java/com/moplus/moplus_server/statistic/Problem/repository/ChildProblemStatisticRepository.java
@@ -3,11 +3,15 @@
 import com.moplus.moplus_server.global.error.exception.ErrorCode;
 import com.moplus.moplus_server.global.error.exception.NotFoundException;
 import com.moplus.moplus_server.statistic.Problem.domain.ChildProblemStatistic;
+import java.util.Optional;
 import org.springframework.data.jpa.repository.JpaRepository;
 
 public interface ChildProblemStatisticRepository extends JpaRepository<ChildProblemStatistic, Long> {
-    default ChildProblemStatistic findByIdElseThrow(Long id) {
-        return findById(id)
-            .orElseThrow(() -> new NotFoundException(ErrorCode.CHILD_PROBLEM_STATISTIC_NOT_FOUND));
+
+    Optional<ChildProblemStatistic> findByChildProblemId(Long childProblemId);
+
+    default ChildProblemStatistic findByChildProblemIdOrElse(Long childProblemId) {
+        return findByChildProblemId(childProblemId)
+                .orElseThrow(() -> new NotFoundException(ErrorCode.CHILD_PROBLEM_STATISTIC_NOT_FOUND));
     }
 } 
\ No newline at end of file
diff --git a/src/main/java/com/moplus/moplus_server/statistic/Problem/repository/ProblemSetStatisticRepository.java b/src/main/java/com/moplus/moplus_server/statistic/Problem/repository/ProblemSetStatisticRepository.java
index 4fc4427f..3eaad573 100644
--- a/src/main/java/com/moplus/moplus_server/statistic/Problem/repository/ProblemSetStatisticRepository.java
+++ b/src/main/java/com/moplus/moplus_server/statistic/Problem/repository/ProblemSetStatisticRepository.java
@@ -14,9 +14,4 @@ default ProblemSetStatistic findByProblemSetIdElseThrow(Long id) {
         return findByProblemSetId(id)
                 .orElseThrow(() -> new NotFoundException(ErrorCode.PROBLEM_SET_STATISTIC_NOT_FOUND));
     }
-
-    default ProblemSetStatistic findByIdElseThrow(Long id) {
-        return findById(id)
-                .orElseThrow(() -> new NotFoundException(ErrorCode.PROBLEM_SET_STATISTIC_NOT_FOUND));
-    }
 } 
\ No newline at end of file
diff --git a/src/main/java/com/moplus/moplus_server/statistic/Problem/repository/ProblemStatisticRepository.java b/src/main/java/com/moplus/moplus_server/statistic/Problem/repository/ProblemStatisticRepository.java
index 59bbfcc5..4862b3c2 100644
--- a/src/main/java/com/moplus/moplus_server/statistic/Problem/repository/ProblemStatisticRepository.java
+++ b/src/main/java/com/moplus/moplus_server/statistic/Problem/repository/ProblemStatisticRepository.java
@@ -3,11 +3,16 @@
 import com.moplus.moplus_server.global.error.exception.ErrorCode;
 import com.moplus.moplus_server.global.error.exception.NotFoundException;
 import com.moplus.moplus_server.statistic.Problem.domain.ProblemStatistic;
+import java.util.Optional;
 import org.springframework.data.jpa.repository.JpaRepository;
 
+
 public interface ProblemStatisticRepository extends JpaRepository<ProblemStatistic, Long> {
-    default ProblemStatistic findByIdElseThrow(Long id) {
-        return findById(id)
-            .orElseThrow(() -> new NotFoundException(ErrorCode.PROBLEM_STATISTIC_NOT_FOUND));
+
+    Optional<ProblemStatistic> findByProblemId(Long problemId);
+
+    default ProblemStatistic findByProblemIdElseThrow(Long problemId) {
+        return findByProblemId(problemId)
+                .orElseThrow(() -> new NotFoundException(ErrorCode.PROBLEM_STATISTIC_NOT_FOUND));
     }
 } 
\ No newline at end of file
diff --git a/src/main/java/com/moplus/moplus_server/statistic/Problem/service/CountStatisticsUpdateService.java b/src/main/java/com/moplus/moplus_server/statistic/Problem/service/CountStatisticsUpdateService.java
index 6c356203..115507a9 100644
--- a/src/main/java/com/moplus/moplus_server/statistic/Problem/service/CountStatisticsUpdateService.java
+++ b/src/main/java/com/moplus/moplus_server/statistic/Problem/service/CountStatisticsUpdateService.java
@@ -10,9 +10,11 @@
 import com.moplus.moplus_server.statistic.Problem.repository.ProblemSetStatisticRepository;
 import com.moplus.moplus_server.statistic.Problem.repository.ProblemStatisticRepository;
 import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
+@Slf4j
 @Service
 @RequiredArgsConstructor
 public class CountStatisticsUpdateService {
@@ -21,8 +23,8 @@ public class CountStatisticsUpdateService {
     private final ChildProblemStatisticRepository childProblemStatisticRepository;
 
     @Transactional
-    public void updateStatistics(Long statisticId, StatisticFieldType type, StatisticEntityTarget target) {
-        StatisticCounter statistic = findStatistic(statisticId, target);
+    public void updateStatistics(Long statisticEntityTargetId, StatisticFieldType type, StatisticEntityTarget target) {
+        StatisticCounter statistic = findStatistic(statisticEntityTargetId, target);
         statistic.updateCount(type);
     }
 
@@ -35,11 +37,19 @@ public void createStatistics(Long statisticId, StatisticEntityTarget target) {
         }
     }
 
-    private StatisticCounter findStatistic(Long statisticId, StatisticEntityTarget target) {
-        return switch (target) {
-            case PROBLEM -> problemStatisticRepository.findByIdElseThrow(statisticId);
-            case PROBLEM_SET -> problemSetStatisticRepository.findByIdElseThrow(statisticId);
-            case CHILD_PROBLEM -> childProblemStatisticRepository.findByIdElseThrow(statisticId);
-        };
+    private StatisticCounter findStatistic(Long statisticEntityTargetId, StatisticEntityTarget target) {
+        try {
+            return switch (target) {
+                case PROBLEM -> problemStatisticRepository.findByProblemIdElseThrow(statisticEntityTargetId);
+                case PROBLEM_SET -> problemSetStatisticRepository.findByProblemSetIdElseThrow(statisticEntityTargetId);
+                case CHILD_PROBLEM ->
+                        childProblemStatisticRepository.findByChildProblemIdOrElse(statisticEntityTargetId);
+            };
+        } catch (Exception e) {
+            String message = String.format("📌 [통계 조회 실패] targetType=%s, id=%d, error=%s", target,
+                    statisticEntityTargetId, e.getMessage());
+            log.warn(message, e);
+            throw e;
+        }
     }
 }
diff --git a/src/test/java/com/moplus/moplus_server/statistic/Problem/service/CountStatisticsUpdateServiceTest.java b/src/test/java/com/moplus/moplus_server/statistic/Problem/service/CountStatisticsUpdateServiceTest.java
index 94e133e3..fb663cec 100644
--- a/src/test/java/com/moplus/moplus_server/statistic/Problem/service/CountStatisticsUpdateServiceTest.java
+++ b/src/test/java/com/moplus/moplus_server/statistic/Problem/service/CountStatisticsUpdateServiceTest.java
@@ -36,7 +36,7 @@ class CountStatisticsUpdateServiceTest {
         // given
         Long problemId = 1L;
         ProblemStatistic problemStatistic = new ProblemStatistic(problemId);
-        given(problemStatisticRepository.findByIdElseThrow(problemId))
+        given(problemStatisticRepository.findByProblemIdElseThrow(problemId))
                 .willReturn(problemStatistic);
 
         // when
@@ -44,7 +44,7 @@ class CountStatisticsUpdateServiceTest {
                 StatisticEntityTarget.PROBLEM);
 
         // then
-        verify(problemStatisticRepository).findByIdElseThrow(problemId);
+        verify(problemStatisticRepository).findByProblemIdElseThrow(problemId);
         assertThat(problemStatistic.getViewCount()).isEqualTo(1L);
         assertThat(problemStatistic.getSubmitCount()).isEqualTo(0L);
     }
@@ -54,7 +54,7 @@ class CountStatisticsUpdateServiceTest {
         // given
         Long problemSetId = 1L;
         ProblemSetStatistic problemSetStatistic = new ProblemSetStatistic(problemSetId);
-        given(problemSetStatisticRepository.findByIdElseThrow(problemSetId))
+        given(problemSetStatisticRepository.findByProblemSetIdElseThrow(problemSetId))
                 .willReturn(problemSetStatistic);
 
         // when
@@ -62,7 +62,7 @@ class CountStatisticsUpdateServiceTest {
                 StatisticEntityTarget.PROBLEM_SET);
 
         // then
-        verify(problemSetStatisticRepository).findByIdElseThrow(problemSetId);
+        verify(problemSetStatisticRepository).findByProblemSetIdElseThrow(problemSetId);
         assertThat(problemSetStatistic.getSubmitCount()).isEqualTo(1L);
         assertThat(problemSetStatistic.getViewCount()).isEqualTo(0L);
     }
@@ -72,7 +72,7 @@ class CountStatisticsUpdateServiceTest {
         // given
         Long childProblemId = 1L;
         ChildProblemStatistic childProblemStatistic = new ChildProblemStatistic(childProblemId);
-        given(childProblemStatisticRepository.findByIdElseThrow(childProblemId))
+        given(childProblemStatisticRepository.findByChildProblemIdOrElse(childProblemId))
                 .willReturn(childProblemStatistic);
 
         // when
@@ -80,7 +80,7 @@ class CountStatisticsUpdateServiceTest {
                 StatisticEntityTarget.CHILD_PROBLEM);
 
         // then
-        verify(childProblemStatisticRepository).findByIdElseThrow(childProblemId);
+        verify(childProblemStatisticRepository).findByChildProblemIdOrElse(childProblemId);
         assertThat(childProblemStatistic.getViewCount()).isEqualTo(1L);
         assertThat(childProblemStatistic.getSubmitCount()).isEqualTo(0L);
     }