diff --git a/server/src/main/kotlin/com/fone/user/domain/entity/User.kt b/server/src/main/kotlin/com/fone/user/domain/entity/User.kt
index 15abef3a..b3f1fe2a 100644
--- a/server/src/main/kotlin/com/fone/user/domain/entity/User.kt
+++ b/server/src/main/kotlin/com/fone/user/domain/entity/User.kt
@@ -39,7 +39,7 @@ data class User(
     @Column var name: String = "",
     @Column var nickname: String = "",
     @Column var birthday: LocalDate? = null,
-    @Enumerated(EnumType.STRING) val gender: Gender = Gender.MAN,
+    @Enumerated(EnumType.STRING) val gender: Gender? = null,
     @Column(length = 300) var profileUrl: String = "",
     @Column(unique = true) var phoneNumber: String? = "",
     @Column var email: String = "",
diff --git a/server/src/main/kotlin/com/fone/user/presentation/dto/SignUpUserDto.kt b/server/src/main/kotlin/com/fone/user/presentation/dto/SignUpUserDto.kt
index fe0b8109..e092f9ca 100644
--- a/server/src/main/kotlin/com/fone/user/presentation/dto/SignUpUserDto.kt
+++ b/server/src/main/kotlin/com/fone/user/presentation/dto/SignUpUserDto.kt
@@ -24,8 +24,8 @@ data class SocialSignUpUserRequest(
     @field:NotNull(message = "직업은 필수 값 입니다.") val job: Job,
     @field:Size(min = 1, message = "관심사는 1개 이상 선택 되어야 합니다") val interests: List<CategoryType>,
     @field:NotEmpty(message = "닉네임은 필수 값 입니다.") val nickname: String,
-    @DateTimeFormat(pattern = "yyyy-MM-dd") val birthday: LocalDate,
-    @field:NotNull(message = "성별은 필수 값 입니다.") val gender: Gender,
+    @DateTimeFormat(pattern = "yyyy-MM-dd") val birthday: LocalDate?,
+    val gender: Gender?,
     val profileUrl: String?,
     @field:Pattern(regexp = "^\\d{2,3}-\\d{3,4}-\\d{4}\$")
     @ApiModelProperty(
@@ -50,10 +50,11 @@ data class SocialSignUpUserRequest(
 ) {
     fun toEntity(): User {
         loginTypeAssertion()
-        val identifier = when (loginType) {
-            LoginType.APPLE -> identifier
-            else -> email
-        } ?: throw ServerWebInputException("애플의 경우 identifier가 명시되어 있어야함")
+        val identifier =
+            when (loginType) {
+                LoginType.APPLE -> identifier
+                else -> email
+            } ?: throw ServerWebInputException("애플의 경우 identifier가 명시되어 있어야함")
         return User(
             job = job,
             interests = interests.map { it.toString() },
@@ -85,8 +86,8 @@ data class EmailSignUpUserRequest(
     @field:Size(min = 1, message = "관심사는 1개 이상 선택 되어야 합니다") val interests: List<CategoryType>,
     @field:NotEmpty(message = "이름은 필수 값 입니다.") val name: String,
     @field:NotEmpty(message = "닉네임은 필수 값 입니다.") val nickname: String,
-    @DateTimeFormat(pattern = "yyyy-MM-dd") val birthday: LocalDate,
-    @field:NotNull(message = "성별은 필수 값 입니다.") val gender: Gender,
+    @DateTimeFormat(pattern = "yyyy-MM-dd") val birthday: LocalDate?,
+    val gender: Gender?,
     val profileUrl: String?,
     @field:Pattern(regexp = "^\\d{2,3}-\\d{3,4}-\\d{4}\$")
     @ApiModelProperty(
@@ -140,7 +141,6 @@ data class SignUpUserResponse(
     val user: UserDto,
     val token: Token,
 ) {
-
     constructor(
         user: User,
         token: Token,
diff --git a/server/src/main/kotlin/com/fone/user/presentation/dto/common/UserDto.kt b/server/src/main/kotlin/com/fone/user/presentation/dto/common/UserDto.kt
index 7add7ff8..e568beae 100644
--- a/server/src/main/kotlin/com/fone/user/presentation/dto/common/UserDto.kt
+++ b/server/src/main/kotlin/com/fone/user/presentation/dto/common/UserDto.kt
@@ -13,7 +13,7 @@ data class UserDto(
     val interests: List<CategoryType>,
     val nickname: String,
     val birthday: LocalDate?,
-    val gender: Gender,
+    val gender: Gender?,
     val profileUrl: String,
     val phoneNumber: String,
     val email: String,
@@ -25,7 +25,6 @@ data class UserDto(
     val enabled: Boolean,
     val isVerified: Boolean,
 ) {
-
     constructor(
         user: User,
     ) : this(