diff --git a/wasin/src/main/java/com/wasin/wasin/_core/exception/BaseException.java b/wasin/src/main/java/com/wasin/wasin/_core/exception/BaseException.java
index e209981..49a9884 100644
--- a/wasin/src/main/java/com/wasin/wasin/_core/exception/BaseException.java
+++ b/wasin/src/main/java/com/wasin/wasin/_core/exception/BaseException.java
@@ -78,6 +78,9 @@ public enum BaseException {
     POWER_SAVING_MODE_CHANGE_FAIL("파워 세이빙 모드로 바꾸는 데 실패했습니다.", HttpStatus.INTERNAL_SERVER_ERROR),
     SSH_CONNECTION_FAIL("SSH 연결에 실패했습니다.", HttpStatus.INTERNAL_SERVER_ERROR),
 
+    // 모니터링
+    MONITOR_PERMISSION_NONE("모니터링 권한이 없습니다.", HttpStatus.FORBIDDEN),
+
     ;
 
 
diff --git a/wasin/src/main/java/com/wasin/wasin/controller/MonitoringController.java b/wasin/src/main/java/com/wasin/wasin/controller/MonitoringController.java
index 4e82f40..d6c75f8 100644
--- a/wasin/src/main/java/com/wasin/wasin/controller/MonitoringController.java
+++ b/wasin/src/main/java/com/wasin/wasin/controller/MonitoringController.java
@@ -26,4 +26,11 @@ public ResponseEntity<?> monitorById(@RequestParam(value = "routerId") Long rout
         return ResponseEntity.ok().body(ApiUtils.success(response));
     }
 
+    // 관리자가 속한 라우터 그룹의 모든 라우터 조회
+    @GetMapping("/routers")
+    public ResponseEntity<?> findAllRouter(@AuthenticationPrincipal CustomUserDetails userDetails) {
+        MonitorResponse.FindAllRouter response = monitoringService.findAllRouter(userDetails.getUser());
+        return ResponseEntity.ok().body(ApiUtils.success(response));
+    }
+
 }
diff --git a/wasin/src/main/java/com/wasin/wasin/domain/dto/MonitorResponse.java b/wasin/src/main/java/com/wasin/wasin/domain/dto/MonitorResponse.java
index 7ffc4b2..348852a 100644
--- a/wasin/src/main/java/com/wasin/wasin/domain/dto/MonitorResponse.java
+++ b/wasin/src/main/java/com/wasin/wasin/domain/dto/MonitorResponse.java
@@ -24,4 +24,15 @@ public record MonitorGraph(
     ) {
     }
 
+    public record FindAllRouter (
+        List<MonitorRouter> routerList
+    ) {
+    }
+
+    public record MonitorRouter(
+        Long routerId,
+        String name,
+        String instance
+    ) {
+    }
 }
diff --git a/wasin/src/main/java/com/wasin/wasin/domain/mapper/MonitoringMapper.java b/wasin/src/main/java/com/wasin/wasin/domain/mapper/MonitoringMapper.java
index fa035aa..a4271c8 100644
--- a/wasin/src/main/java/com/wasin/wasin/domain/mapper/MonitoringMapper.java
+++ b/wasin/src/main/java/com/wasin/wasin/domain/mapper/MonitoringMapper.java
@@ -3,6 +3,7 @@
 import com.wasin.wasin.domain._const.Metric;
 import com.wasin.wasin.domain.dto.MonitorResponse;
 import com.wasin.wasin.domain.dto.RouterResponse;
+import com.wasin.wasin.domain.entity.Router;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Component;
 
@@ -42,4 +43,16 @@ private List<MonitorResponse.MonitorMetric> getMetricList() {
                 )
         ).toList();
     }
+
+    public MonitorResponse.FindAllRouter toRouterListDTO(List<Router> routerList) {
+        return new MonitorResponse.FindAllRouter(
+            routerList.stream().map(it ->
+                new MonitorResponse.MonitorRouter(
+                        it.getId(),
+                        it.getName(),
+                        it.getInstance()
+                )
+            ).toList()
+        );
+    }
 }
diff --git a/wasin/src/main/java/com/wasin/wasin/domain/validation/MonitoringValidation.java b/wasin/src/main/java/com/wasin/wasin/domain/validation/MonitoringValidation.java
new file mode 100644
index 0000000..ed25aed
--- /dev/null
+++ b/wasin/src/main/java/com/wasin/wasin/domain/validation/MonitoringValidation.java
@@ -0,0 +1,22 @@
+package com.wasin.wasin.domain.validation;
+
+import com.wasin.wasin._core.exception.BaseException;
+import com.wasin.wasin._core.exception.error.ForbiddenException;
+import com.wasin.wasin.domain.entity.Router;
+import com.wasin.wasin.domain.entity.User;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Component;
+
+@Component
+@RequiredArgsConstructor
+public class MonitoringValidation {
+
+
+    public void checkRouterExistInGroup(Router router, User user) {
+        Long routerCompanyId = router.getCompany().getId();
+        Long userCompanyId = user.getCompany().getId();
+        if (!routerCompanyId.equals(userCompanyId)) {
+            throw new ForbiddenException(BaseException.MONITOR_PERMISSION_NONE);
+        }
+    }
+}
diff --git a/wasin/src/main/java/com/wasin/wasin/service/MonitoringService.java b/wasin/src/main/java/com/wasin/wasin/service/MonitoringService.java
index d219f0c..58d6804 100644
--- a/wasin/src/main/java/com/wasin/wasin/service/MonitoringService.java
+++ b/wasin/src/main/java/com/wasin/wasin/service/MonitoringService.java
@@ -6,4 +6,6 @@
 public interface MonitoringService {
 
     MonitorResponse.FindById monitorById(Long routerId, Long metricId, Long time, User user);
+
+    MonitorResponse.FindAllRouter findAllRouter(User user);
 }
diff --git a/wasin/src/main/java/com/wasin/wasin/service/impl/MonitoringServiceImpl.java b/wasin/src/main/java/com/wasin/wasin/service/impl/MonitoringServiceImpl.java
index 5b94f4e..bb19b4e 100644
--- a/wasin/src/main/java/com/wasin/wasin/service/impl/MonitoringServiceImpl.java
+++ b/wasin/src/main/java/com/wasin/wasin/service/impl/MonitoringServiceImpl.java
@@ -6,36 +6,58 @@
 import com.wasin.wasin.domain._const.Metric;
 import com.wasin.wasin.domain.dto.MonitorResponse;
 import com.wasin.wasin.domain.dto.RouterResponse;
+import com.wasin.wasin.domain.entity.Company;
 import com.wasin.wasin.domain.entity.Router;
 import com.wasin.wasin.domain.entity.User;
 import com.wasin.wasin.domain.mapper.MonitoringMapper;
+import com.wasin.wasin.domain.validation.MonitoringValidation;
 import com.wasin.wasin.repository.RouterJPARepository;
+import com.wasin.wasin.repository.UserJPARepository;
 import com.wasin.wasin.service.MonitoringService;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
+import java.util.List;
+
 @RequiredArgsConstructor
 @Transactional(readOnly = true)
 @Service
 public class MonitoringServiceImpl implements MonitoringService {
 
+    private final UserJPARepository userJPARepository;
     private final RouterJPARepository routerJPARepository;
     private final MonitoringApiUtil monitoringApiUtil;
     private final MonitoringMapper monitoringMapper;
+    private final MonitoringValidation monitoringValidation;
 
-    public MonitorResponse.FindById monitorById(Long routerId, Long metricId, Long time, User user) {
-        // default values
+    public MonitorResponse.FindById monitorById(Long routerId, Long metricId, Long time, User _user) {
         if (metricId == null) metricId = 0L;
         if (time == null) time = 60L;
 
         Metric metric = Metric.findByMetricId(metricId);
         Router router = findByRouterId(routerId);
+        User user = findUserByUserId(_user.getId());
+
+        monitoringValidation.checkRouterExistInGroup(router, user);
         RouterResponse.MonitorResult results = monitoringApiUtil.getMetric(metric, router, time);
 
         return monitoringMapper.resultToDTO(results, metricId, time);
     }
 
+    public MonitorResponse.FindAllRouter findAllRouter(User _user) {
+        User user = findUserByUserId(_user.getId());
+        Company company = user.getCompany();
+        List<Router> routerList = routerJPARepository.findAllRouterByCompanyId(company.getId());
+        return monitoringMapper.toRouterListDTO(routerList);
+    }
+
+    private User findUserByUserId(Long userId) {
+        return userJPARepository.findActiveUserWithCompanyById(userId).orElseThrow(
+                () -> new NotFoundException(BaseException.USER_NOT_FOUND)
+        );
+    }
+
     private Router findByRouterId(Long routerId) {
         return routerJPARepository.findById(routerId).orElseThrow(
                 () -> new NotFoundException(BaseException.ROUTER_NOT_EXIST_IN_DB)