diff --git a/keewe-api/src/main/java/ccc/keeweapi/service/challenge/ChallengeApiService.java b/keewe-api/src/main/java/ccc/keeweapi/service/challenge/ChallengeApiService.java
index e8959ee9..7248925d 100644
--- a/keewe-api/src/main/java/ccc/keeweapi/service/challenge/ChallengeApiService.java
+++ b/keewe-api/src/main/java/ccc/keeweapi/service/challenge/ChallengeApiService.java
@@ -29,6 +29,7 @@
 import ccc.keewedomain.service.insight.query.InsightQueryDomainService;
 import ccc.keewedomain.service.user.query.ProfileQueryDomainService;
 import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
 import org.springframework.data.domain.Pageable;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
@@ -45,6 +46,7 @@
 @Service
 @RequiredArgsConstructor
 @Transactional(readOnly = true)
+@Slf4j
 public class ChallengeApiService {
 
     private final ChallengeParticipateQueryDomainService challengeParticipateQueryDomainService;
diff --git a/keewe-domain/src/main/java/ccc/keewedomain/persistence/domain/challenge/Challenge.java b/keewe-domain/src/main/java/ccc/keewedomain/persistence/domain/challenge/Challenge.java
index 08e62eda..e1e0ccaf 100644
--- a/keewe-domain/src/main/java/ccc/keewedomain/persistence/domain/challenge/Challenge.java
+++ b/keewe-domain/src/main/java/ccc/keewedomain/persistence/domain/challenge/Challenge.java
@@ -55,11 +55,12 @@ public static Challenge of(User writer, String name, String interest, String int
 
     public ChallengeParticipation participate(User challenger, String myTopic, int insightPerWeek, int duration) {
         ChallengeParticipation participation = ChallengeParticipation.of(
-                challenger,
-                this,
-                myTopic,
-                insightPerWeek,
-                duration);
+            challenger,
+            this,
+            myTopic,
+            insightPerWeek,
+            duration
+        );
         getParticipationList().add(participation);
         this.deleted = false;
         return participation;
diff --git a/keewe-domain/src/main/java/ccc/keewedomain/service/challenge/command/ChallengeCommandDomainService.java b/keewe-domain/src/main/java/ccc/keewedomain/service/challenge/command/ChallengeCommandDomainService.java
index e8a06733..6f6a54a2 100644
--- a/keewe-domain/src/main/java/ccc/keewedomain/service/challenge/command/ChallengeCommandDomainService.java
+++ b/keewe-domain/src/main/java/ccc/keewedomain/service/challenge/command/ChallengeCommandDomainService.java
@@ -10,6 +10,7 @@
 import ccc.keewedomain.persistence.domain.challenge.Challenge;
 import ccc.keewedomain.persistence.domain.challenge.ChallengeParticipation;
 import ccc.keewedomain.persistence.domain.user.User;
+import ccc.keewedomain.persistence.repository.challenge.ChallengeParticipationRepository;
 import ccc.keewedomain.persistence.repository.challenge.ChallengeRepository;
 import ccc.keewedomain.service.challenge.query.ChallengeParticipateQueryDomainService;
 import ccc.keewedomain.service.challenge.query.ChallengeQueryDomainService;
@@ -19,15 +20,18 @@
 import java.time.Period;
 import java.util.List;
 import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 import org.springframework.util.Assert;
 
 @RequiredArgsConstructor
 @Service
+@Slf4j
 public class ChallengeCommandDomainService {
 
     private final ChallengeRepository challengeRepository;
+    private final ChallengeParticipationRepository challengeParticipationRepository;
     private final ChallengeQueryDomainService challengeQueryDomainService;
     private final ChallengeParticipateQueryDomainService challengeParticipateQueryDomainService;
     private final UserDomainService userDomainService;
@@ -54,7 +58,11 @@ public ChallengeParticipation participate(ChallengeParticipateDto dto) {
             Assert.isTrue(!challenger.isDeleted(), "탈퇴한 사용자는 챌린지에 참여할 수 없어요.");
             this.exitCurrentChallengeIfExist(challenger);
             Challenge challenge = challengeQueryDomainService.getByIdOrElseThrow(dto.getChallengeId());
-            return challenge.participate(challenger, dto.getMyTopic(), dto.getInsightPerWeek(), dto.getDuration());
+            ChallengeParticipation participate = challenge.participate(challenger, dto.getMyTopic(), dto.getInsightPerWeek(), dto.getDuration());
+            challengeRepository.save(challenge);
+            challengeParticipationRepository.save(participate);
+            log.info("[ChallengeCommandDomainService] 챌린지 참여 완료 - userId({}), challengeId({})", challenger.getId(), challenge.getId());
+            return participate;
         });
     }