diff --git a/src/main/java/kusitms/server/domain/cafe/entity/Cafe.java b/src/main/java/kusitms/server/domain/cafe/entity/Cafe.java
index 5e0a20d..380c4cd 100644
--- a/src/main/java/kusitms/server/domain/cafe/entity/Cafe.java
+++ b/src/main/java/kusitms/server/domain/cafe/entity/Cafe.java
@@ -4,6 +4,9 @@
 import kusitms.server.domain.user.entity.User;
 import lombok.*;
 
+import java.util.ArrayList;
+import java.util.List;
+
 @Getter
 @NoArgsConstructor(access = AccessLevel.PROTECTED)
 @AllArgsConstructor
@@ -29,4 +32,7 @@ public class Cafe {
     @JoinColumn(name = "user_id")
     private User user;
 
+    @OneToMany(mappedBy = "cafe", fetch = FetchType.LAZY)
+    private List<CafeCompany> cafeCompanies = new ArrayList<>();
+
 }
diff --git a/src/main/java/kusitms/server/domain/cafe/entity/CafeCompany.java b/src/main/java/kusitms/server/domain/cafe/entity/CafeCompany.java
new file mode 100644
index 0000000..3e8d78d
--- /dev/null
+++ b/src/main/java/kusitms/server/domain/cafe/entity/CafeCompany.java
@@ -0,0 +1,28 @@
+package kusitms.server.domain.cafe.entity;
+
+
+import jakarta.persistence.*;
+import kusitms.server.domain.company.entity.Company;
+import kusitms.server.domain.user.entity.User;
+import lombok.*;
+
+@Getter
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+@AllArgsConstructor
+@Builder
+@Entity
+public class CafeCompany {
+    @Id
+    @Column(name = "cafe_company_id")
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @ManyToOne
+    @JoinColumn(name = "cafe_id")
+    private Cafe cafe;
+
+    @ManyToOne
+    @JoinColumn(name = "company_id")
+    private Company company;
+
+}
diff --git a/src/main/java/kusitms/server/domain/company/entity/Company.java b/src/main/java/kusitms/server/domain/company/entity/Company.java
index 96ea0b8..8c724f4 100644
--- a/src/main/java/kusitms/server/domain/company/entity/Company.java
+++ b/src/main/java/kusitms/server/domain/company/entity/Company.java
@@ -2,9 +2,13 @@
 
 import jakarta.persistence.*;
 import kusitms.server.domain.department.entity.Department;
+import kusitms.server.domain.cafe.entity.CafeCompany;
 import kusitms.server.domain.user.entity.User;
 import lombok.*;
 
+import java.util.ArrayList;
+import java.util.List;
+
 @Getter
 @NoArgsConstructor(access = AccessLevel.PROTECTED)
 @AllArgsConstructor
@@ -27,7 +31,10 @@ public class Company {
     @JoinColumn(name = "user_id")
     private User user;
 
-    @OneToOne(mappedBy = "company", cascade = CascadeType.ALL, orphanRemoval = true)
-    private Department department;
+    @OneToMany(mappedBy = "company", cascade = CascadeType.ALL, orphanRemoval = true)
+    private List<Department> departments = new ArrayList<>();
+
+    @OneToMany(mappedBy = "company", fetch = FetchType.LAZY)
+    private List<CafeCompany> cafeCompanies = new ArrayList<>();
 
 }
diff --git a/src/main/java/kusitms/server/domain/department/entity/Department.java b/src/main/java/kusitms/server/domain/department/entity/Department.java
index 9b20619..27670f4 100644
--- a/src/main/java/kusitms/server/domain/department/entity/Department.java
+++ b/src/main/java/kusitms/server/domain/department/entity/Department.java
@@ -29,7 +29,7 @@ public class Department {
     @JoinColumn(name = "user_id")
     private User user; // 유저 id
 
-    @OneToOne(fetch = LAZY, cascade = CascadeType.ALL)
+    @ManyToOne(fetch = LAZY, cascade = CascadeType.ALL)
     @JoinColumn(name = "company_id")
     private Company company; // 회사 id