diff --git a/src/main/java/daybyquest/badge/domain/BadgeRepository.java b/src/main/java/daybyquest/badge/domain/BadgeRepository.java
index 2fc88dd..8517a13 100644
--- a/src/main/java/daybyquest/badge/domain/BadgeRepository.java
+++ b/src/main/java/daybyquest/badge/domain/BadgeRepository.java
@@ -5,7 +5,9 @@
 
 interface BadgeRepository extends Repository<Badge, Long> {
 
-    Badge save(Badge badge);
+    Badge save(final Badge badge);
 
-    Optional<Badge> findById(Long id);
+    Optional<Badge> findById(final Long id);
+
+    boolean existsById(final Long id);
 }
diff --git a/src/main/java/daybyquest/badge/domain/Badges.java b/src/main/java/daybyquest/badge/domain/Badges.java
index 2b8af46..9487a35 100644
--- a/src/main/java/daybyquest/badge/domain/Badges.java
+++ b/src/main/java/daybyquest/badge/domain/Badges.java
@@ -1,5 +1,6 @@
 package daybyquest.badge.domain;
 
+import daybyquest.global.error.exception.NotExistBadgeException;
 import org.springframework.stereotype.Component;
 
 @Component
@@ -14,4 +15,14 @@ public class Badges {
     public void save(final Badge badge) {
         badgeRepository.save(badge);
     }
+
+    public void validateExistentById(final Long id) {
+        if (!badgeRepository.existsById(id)) {
+            throw new NotExistBadgeException();
+        }
+    }
+
+    public Badge getById(final Long id) {
+        return badgeRepository.findById(id).orElseThrow(NotExistBadgeException::new);
+    }
 }
diff --git a/src/main/java/daybyquest/badge/domain/OwningRepository.java b/src/main/java/daybyquest/badge/domain/OwningRepository.java
index 350a8cf..53625ab 100644
--- a/src/main/java/daybyquest/badge/domain/OwningRepository.java
+++ b/src/main/java/daybyquest/badge/domain/OwningRepository.java
@@ -3,10 +3,10 @@
 import java.util.Optional;
 import org.springframework.data.repository.Repository;
 
-public interface OwningRepository extends Repository<Owning, OwningId> {
+interface OwningRepository extends Repository<Owning, OwningId> {
 
-    Owning save(Owning owning);
+    Owning save(final Owning owning);
 
-    Optional<Owning> findByUserId(Long userId);
+    Optional<Owning> findByUserId(final Long userId);
 
 }
\ No newline at end of file
diff --git a/src/main/java/daybyquest/badge/domain/Ownings.java b/src/main/java/daybyquest/badge/domain/Ownings.java
new file mode 100644
index 0000000..08778b2
--- /dev/null
+++ b/src/main/java/daybyquest/badge/domain/Ownings.java
@@ -0,0 +1,24 @@
+package daybyquest.badge.domain;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class Ownings {
+
+    private final OwningRepository owningRepository;
+
+    private final Badges badges;
+
+    Ownings(final OwningRepository owningRepository, final Badges badges) {
+        this.owningRepository = owningRepository;
+        this.badges = badges;
+    }
+
+    public void save(final Owning owning) {
+        owningRepository.save(owning);
+    }
+
+    public void saveByUserIdAndBadgeId(final Long userId, final Long badgeId) {
+        save(new Owning(userId, badges.getById(badgeId)));
+    }
+}
diff --git a/src/main/java/daybyquest/global/error/exception/NotExistBadgeException.java b/src/main/java/daybyquest/global/error/exception/NotExistBadgeException.java
new file mode 100644
index 0000000..932f41f
--- /dev/null
+++ b/src/main/java/daybyquest/global/error/exception/NotExistBadgeException.java
@@ -0,0 +1,10 @@
+package daybyquest.global.error.exception;
+
+import daybyquest.global.error.ExceptionCode;
+
+public class NotExistBadgeException extends CustomException {
+
+    public NotExistBadgeException() {
+        super(ExceptionCode.NOT_EXIST_BADGE);
+    }
+}
diff --git a/src/main/java/daybyquest/participant/application/TakeRewardService.java b/src/main/java/daybyquest/participant/application/TakeRewardService.java
index e9e6354..577d6a1 100644
--- a/src/main/java/daybyquest/participant/application/TakeRewardService.java
+++ b/src/main/java/daybyquest/participant/application/TakeRewardService.java
@@ -1,5 +1,6 @@
 package daybyquest.participant.application;
 
+import daybyquest.badge.domain.Ownings;
 import daybyquest.participant.domain.Participant;
 import daybyquest.participant.domain.Participants;
 import org.springframework.stereotype.Service;
@@ -10,13 +11,19 @@ public class TakeRewardService {
 
     private final Participants participants;
 
-    public TakeRewardService(final Participants participants) {
+    private final Ownings ownings;
+
+    public TakeRewardService(final Participants participants, final Ownings ownings) {
         this.participants = participants;
+        this.ownings = ownings;
     }
 
     @Transactional
     public void invoke(final Long loginId, final Long questId) {
         final Participant participant = participants.getByUserIdAndQuestId(loginId, questId);
-        participant.takeReward();
+        final Long badgeId = participant.takeReward();
+        if (badgeId != null) {
+            ownings.saveByUserIdAndBadgeId(loginId, badgeId);
+        }
     }
 }
diff --git a/src/main/java/daybyquest/participant/domain/Participant.java b/src/main/java/daybyquest/participant/domain/Participant.java
index c9150be..e1c8d49 100644
--- a/src/main/java/daybyquest/participant/domain/Participant.java
+++ b/src/main/java/daybyquest/participant/domain/Participant.java
@@ -50,10 +50,11 @@ public Long getQuestId() {
         return quest.getId();
     }
 
-    public void takeReward() {
+    public Long takeReward() {
         validateDidNotTakeReward();
         validateRewardCount();
         state = FINISHED;
+        return quest.getBadgeId();
     }
 
     private void validateDidNotTakeReward() {
diff --git a/src/main/java/daybyquest/participant/domain/Participants.java b/src/main/java/daybyquest/participant/domain/Participants.java
index 8e7ced8..e761d0f 100644
--- a/src/main/java/daybyquest/participant/domain/Participants.java
+++ b/src/main/java/daybyquest/participant/domain/Participants.java
@@ -40,6 +40,13 @@ private void validateNotExistent(final Participant participant) {
         }
     }
 
+    public void validateExistent(final Long userId, final Long questId) {
+        if (!participantRepository.existsByUserIdAndQuestId(userId,
+                questId)) {
+            throw new InvalidDomainException(NOT_ACCEPTED_QUEST);
+        }
+    }
+
     public Participant getByUserIdAndQuestId(final Long userId, final Long questId) {
         return participantRepository.findByUserIdAndQuestId(userId, questId)
                 .orElseThrow(() -> new InvalidDomainException(NOT_ACCEPTED_QUEST));
diff --git a/src/main/java/daybyquest/post/domain/Posts.java b/src/main/java/daybyquest/post/domain/Posts.java
index 9c2cf13..60e5051 100644
--- a/src/main/java/daybyquest/post/domain/Posts.java
+++ b/src/main/java/daybyquest/post/domain/Posts.java
@@ -1,6 +1,7 @@
 package daybyquest.post.domain;
 
 import daybyquest.global.error.exception.NotExistPostException;
+import daybyquest.participant.domain.Participants;
 import daybyquest.user.domain.Users;
 import org.springframework.stereotype.Component;
 
@@ -11,13 +12,19 @@ public class Posts {
 
     private final Users users;
 
-    Posts(final PostRepository postRepository, final Users users) {
+    private final Participants participants;
+
+    Posts(final PostRepository postRepository, final Users users, final Participants participants) {
         this.postRepository = postRepository;
         this.users = users;
+        this.participants = participants;
     }
 
     public Long save(final Post post) {
         users.validateExistentById(post.getUserId());
+        if (post.getQuestId() != null) {
+            participants.validateExistent(post.getUserId(), post.getQuestId());
+        }
         return postRepository.save(post).getId();
     }
 
diff --git a/src/main/java/daybyquest/quest/domain/Quests.java b/src/main/java/daybyquest/quest/domain/Quests.java
index a23eff2..2f3ebe1 100644
--- a/src/main/java/daybyquest/quest/domain/Quests.java
+++ b/src/main/java/daybyquest/quest/domain/Quests.java
@@ -1,5 +1,6 @@
 package daybyquest.quest.domain;
 
+import daybyquest.badge.domain.Badges;
 import daybyquest.global.error.exception.NotExistQuestException;
 import org.springframework.stereotype.Component;
 
@@ -8,11 +9,17 @@ public class Quests {
 
     private final QuestRepository questRepository;
 
-    Quests(final QuestRepository questRepository) {
+    private final Badges badges;
+
+    Quests(final QuestRepository questRepository, final Badges badges) {
         this.questRepository = questRepository;
+        this.badges = badges;
     }
 
     public Long save(final Quest quest) {
+        if (quest.getBadgeId() != null) {
+            badges.validateExistentById(quest.getBadgeId());
+        }
         return questRepository.save(quest).getId();
     }