diff --git a/application/src/main/java/org/depromeet/spot/application/member/dto/request/RegisterReq.java b/application/src/main/java/org/depromeet/spot/application/member/dto/request/RegisterReq.java
index dbfbc156..e3a0f520 100644
--- a/application/src/main/java/org/depromeet/spot/application/member/dto/request/RegisterReq.java
+++ b/application/src/main/java/org/depromeet/spot/application/member/dto/request/RegisterReq.java
@@ -19,9 +19,11 @@ public record RegisterReq(
                         regexp = "^[a-zA-Z0-9가-힣]*$",
                         message = "닉네임은 알파벳 대소문자, 숫자, 한글만 허용하며, 공백은 불가능합니다.")
                 String nickname,
-        @NotNull(message = "응원 팀 선택은 필수입니다.")
-                @Schema(description = "응원 팀 pk")
-                @Range(min = 1, max = 11, message = "응원 팀은 1번(두산 베어스)부터 11번(없음)까지 입니다.")
+        @Schema(description = "응원 팀 pk")
+                @Range(
+                        min = 1,
+                        max = 10,
+                        message = "응원 팀은 null(모두 응원), 1번(두산 베어스)부터 10번(NC 다이노스)까지 입니다.")
                 Long teamId) {
 
     public Member toDomain() {
diff --git a/infrastructure/jpa/src/main/java/org/depromeet/spot/jpa/member/entity/MemberEntity.java b/infrastructure/jpa/src/main/java/org/depromeet/spot/jpa/member/entity/MemberEntity.java
index e2f5a6f3..a22957fc 100644
--- a/infrastructure/jpa/src/main/java/org/depromeet/spot/jpa/member/entity/MemberEntity.java
+++ b/infrastructure/jpa/src/main/java/org/depromeet/spot/jpa/member/entity/MemberEntity.java
@@ -55,7 +55,7 @@ public class MemberEntity extends BaseEntity {
     @Column(name = "id_token", nullable = false, unique = true, length = 255)
     private String idToken;
 
-    @Column(name = "team_id", nullable = false, length = 10)
+    @Column(name = "team_id", length = 10)
     private Long teamId;
 
     @Column(name = "role", nullable = false)
diff --git a/usecase/src/main/java/org/depromeet/spot/usecase/port/in/member/MemberUsecase.java b/usecase/src/main/java/org/depromeet/spot/usecase/port/in/member/MemberUsecase.java
index 8084d352..bc851b3b 100644
--- a/usecase/src/main/java/org/depromeet/spot/usecase/port/in/member/MemberUsecase.java
+++ b/usecase/src/main/java/org/depromeet/spot/usecase/port/in/member/MemberUsecase.java
@@ -34,6 +34,17 @@ class MemberInfo {
         private String teamImageUrl;
         private final Long teamId;
 
+        public static MemberInfo from(Member member) {
+            return MemberInfo.builder()
+                    .nickname(member.getNickname())
+                    .profileImageUrl(member.getProfileImage())
+                    .level(member.getLevel().getValue())
+                    .levelTitle(member.getLevel().getTitle())
+                    .teamImageUrl(null)
+                    .teamId(null)
+                    .build();
+        }
+
         public static MemberInfo of(Member member, BaseballTeam baseballTeam) {
             return MemberInfo.builder()
                     .nickname(member.getNickname())
diff --git a/usecase/src/main/java/org/depromeet/spot/usecase/service/member/MemberService.java b/usecase/src/main/java/org/depromeet/spot/usecase/service/member/MemberService.java
index beaa5cf7..1438a8c0 100644
--- a/usecase/src/main/java/org/depromeet/spot/usecase/service/member/MemberService.java
+++ b/usecase/src/main/java/org/depromeet/spot/usecase/service/member/MemberService.java
@@ -78,8 +78,10 @@ public boolean deleteMember(String accessToken) {
     @Override
     public MemberInfo findMemberInfo(Long memberId) {
         Member member = readMemberUsecase.findById(memberId);
+        if (member.getTeamId() == null) {
+            return MemberInfo.from(member);
+        }
         BaseballTeam baseballTeam = readBaseballTeamUsecase.findById(member.getTeamId());
-
         return MemberInfo.of(member, baseballTeam);
     }
 
diff --git a/usecase/src/main/java/org/depromeet/spot/usecase/service/member/UpdateMemberService.java b/usecase/src/main/java/org/depromeet/spot/usecase/service/member/UpdateMemberService.java
index c36412f9..39c62502 100644
--- a/usecase/src/main/java/org/depromeet/spot/usecase/service/member/UpdateMemberService.java
+++ b/usecase/src/main/java/org/depromeet/spot/usecase/service/member/UpdateMemberService.java
@@ -27,12 +27,18 @@ public class UpdateMemberService implements UpdateMemberUsecase {
     @Override
     public Member updateProfile(final Long memberId, UpdateProfileCommand command) {
         Member member = readMemberUsecase.findById(memberId);
-        readBaseballTeamUsecase.areAllTeamIdsExist(Set.of(command.teamId()));
-        Member updateMember =
-                member.updateProfile(command.profileImage(), command.nickname(), command.teamId());
+        Member updateMember = getUpdateMember(member, command);
         return memberRepository.updateProfile(updateMember);
     }
 
+    private Member getUpdateMember(Member member, UpdateProfileCommand command) {
+        Long teamId = command.teamId();
+        if (teamId != null) {
+            readBaseballTeamUsecase.areAllTeamIdsExist(Set.of(teamId));
+        }
+        return member.updateProfile(command.profileImage(), command.nickname(), teamId);
+    }
+
     @Override
     public Member updateLevel(Member member, long reviewCnt) {
         final int newLevelValue = Level.calculateLevel(reviewCnt);