diff --git a/maeumgagym-infrastructure/src/main/kotlin/com/info/maeumgagym/security/principle/CustomUserDetailService.kt b/maeumgagym-infrastructure/src/main/kotlin/com/info/maeumgagym/security/principle/CustomUserDetailService.kt
deleted file mode 100644
index bd3cc4bdf..000000000
--- a/maeumgagym-infrastructure/src/main/kotlin/com/info/maeumgagym/security/principle/CustomUserDetailService.kt
+++ /dev/null
@@ -1,14 +0,0 @@
-package com.info.maeumgagym.security.principle
-
-import org.springframework.security.core.userdetails.UserDetailsService
-import org.springframework.stereotype.Component
-
-@Component
-class CustomUserDetailService : UserDetailsService {
-
-    // 유저를 DB에서 불러와 UserDetails를 반환하는 함수
-    override fun loadUserByUsername(username: String): CustomUserDetails {
-        // CustomUserDetails에 User를 null로 삽입해 반환
-        return CustomUserDetails(null, username)
-    }
-}
diff --git a/maeumgagym-infrastructure/src/main/kotlin/com/info/maeumgagym/security/principle/CustomUserDetails.kt b/maeumgagym-infrastructure/src/main/kotlin/com/info/maeumgagym/security/principle/CustomUserDetails.kt
deleted file mode 100644
index 5db56ef0f..000000000
--- a/maeumgagym-infrastructure/src/main/kotlin/com/info/maeumgagym/security/principle/CustomUserDetails.kt
+++ /dev/null
@@ -1,37 +0,0 @@
-package com.info.maeumgagym.security.principle
-
-import com.info.maeumgagym.user.model.User
-import org.springframework.security.core.GrantedAuthority
-import org.springframework.security.core.authority.SimpleGrantedAuthority
-import org.springframework.security.core.userdetails.UserDetails
-
-class CustomUserDetails(
-    private var user: User?,
-    private val oauthId: String
-) : UserDetails {
-
-    fun getUser(): User? = user
-
-    fun fillUser(user: User) {
-        if (this.user == null) {
-            this.user = user
-        }
-    }
-
-    override fun getAuthorities(): MutableCollection<out GrantedAuthority> =
-        user?.roles?.map {
-            SimpleGrantedAuthority(it.name)
-        }?.toMutableList() ?: mutableListOf()
-
-    override fun getPassword(): String? = null
-
-    override fun getUsername(): String = oauthId
-
-    override fun isAccountNonExpired(): Boolean = true
-
-    override fun isAccountNonLocked(): Boolean = true
-
-    override fun isCredentialsNonExpired(): Boolean = true
-
-    override fun isEnabled(): Boolean = true
-}