diff --git a/src/main/java/com/econovation/third_project/controller/Test.java b/src/main/java/com/econovation/third_project/controller/Test.java
new file mode 100644
index 0000000..8c4e973
--- /dev/null
+++ b/src/main/java/com/econovation/third_project/controller/Test.java
@@ -0,0 +1,86 @@
+package com.econovation.third_project.controller;
+
+import com.econovation.third_project.database.DesiredTime;
+import com.econovation.third_project.database.Path;
+import com.econovation.third_project.database.PersonalInformation;
+import com.econovation.third_project.database.Registration;
+import com.econovation.third_project.service.RegistrationService;
+import lombok.AllArgsConstructor;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.ArrayList;
+import java.util.Map;
+
+@RestController
+@AllArgsConstructor
+public class Test {
+    RegistrationService registrationService;
+
+    @PostMapping("/register")
+    public String register(@RequestBody Registration registration){
+        // 예외처리 필요할듯하다.
+        registrationService.register(registration);
+        return "success";
+    }
+
+    // 지원자 정보 생성
+    @PostMapping("/register-personal-inform")
+    public String registerPersonInform(@RequestBody PersonalInformation personalInformation){
+        registrationService.registerPersonalInform(personalInformation);
+        return "success";
+    }
+
+    // 지원자 지원 경로 생성
+    @PostMapping("/register-path")
+    public String registerPath(@RequestBody Path path){
+        registrationService.registerPath(path);
+        return "success";
+    }
+
+    // 지원자 면접 가능 시간 생성
+    @PostMapping("/register-desired-time")
+    public String registerDesiredTime(@RequestBody DesiredTime desiredTime){
+        registrationService.registerDesiredTime(desiredTime);
+        return "success";
+    }
+    
+
+    // 전체 지원자 수
+    @GetMapping("/registrations-count")
+    public Integer getTotalRegisterCount(){
+        return registrationService.getRegistrationCount();
+    }
+
+    // 개발자, 기획자, 디자이너 별 지원자 수
+    @GetMapping("/registrations-hope-count")
+    public ArrayList<Integer> getHopeFieldsTotalRegisterCount(){
+        return registrationService.getHopeFieldsTotalCount();
+    }
+
+    // 희망 분야별 지원자 수
+    @GetMapping("/registrations/first-hope-field")
+    public Map<String, Integer> getFirstHopeFieldCount() {
+        return registrationService.getHopeFieldsFirstPriorityCount();
+    }
+    @GetMapping("/registrations/second-hope-field")
+    public Map<String, Integer> getSecondHopeFieldCount() {
+        return registrationService.getHopeFieldsSecondPriorityCount();
+    }
+
+    // 지원자 학과별 수
+    @GetMapping("/registrations/department-count")
+    public Map<String, Integer> getDepartmentCount(){
+        return registrationService.getDepartmentCount();
+    }
+
+    // 지원 경로별 수
+    @GetMapping("/registrations/path-count")
+    public Map<String, Integer> getPathCount(){
+        return registrationService.getPathCount();
+    }
+
+}
diff --git a/src/main/java/com/econovation/third_project/database/Database.java b/src/main/java/com/econovation/third_project/database/Database.java
index 33b8710..80ccccf 100644
--- a/src/main/java/com/econovation/third_project/database/Database.java
+++ b/src/main/java/com/econovation/third_project/database/Database.java
@@ -1,8 +1,7 @@
 package com.econovation.third_project.database;
 
-import java.util.HashMap;
-import java.util.Map;
-import java.util.UUID;
+import java.util.*;
+
 import org.springframework.stereotype.Component;
 
 /**
@@ -22,7 +21,77 @@ public void register(Registration registrationRequest) {
         registration.put(UUID.randomUUID().toString(), registrationRequest);
     }
 
+    // PersonalInformation 생성
+    public void savePersonalInformation(PersonalInformation personalInformationRequest){
+        personalInformation.put(UUID.randomUUID().toString(), personalInformationRequest);
+    }
+
+    // 지원 경로 생성
+    public void savePath(Path pathRequest){
+        path.put(UUID.randomUUID().toString(), pathRequest);
+    }
+
+    // 가능 시간 생성
+    public void saveDesiredTime(DesiredTime desiredTimeRequest){
+        desiredTime.put(UUID.randomUUID().toString(),desiredTimeRequest);
+    }
+
     public Registration getRegistration(String userId) {
         return registration.get(userId);
     }
+
+    // 전체 등록 데이터
+    public Map<String,Registration> getAllRegistrations(){
+        return registration;
+    }
+
+    // 전체 소속 데이터
+    public Map<String,PersonalInformation> getAllPersionalInformation(){
+        return personalInformation;
+    }
+
+    // 전체 경로 데이터
+    public Map<String,Path> getAllPath(){
+        return path;
+    }
+
+    // 전체 시간 데이터
+    public Map<String,DesiredTime> getAllDesiredTime(){
+        return desiredTime;
+    }
+
+    // 서비스 파일에 작성해야 하는 로직인지 확인하기
+    public int getRegistrationCount(){
+        return registration.size();
+    }
+
+    // 개발자, 기획자, 디자이너 각각 Count // 서비스 파일에 작성해야 하는 로직인지 확인하기
+    public ArrayList<Integer> getHopeFieldsTotalCount(){
+        ArrayList<Integer> hopeFields = new ArrayList<Integer>(3);
+        // 초기화 방식도 뭔가 이상하다
+        hopeFields.add(0);
+        hopeFields.add(0);
+        hopeFields.add(0);
+        Integer count = 0;
+        // 할 수 있는 조회 방법, 너무 하드 코딩 같다
+        for(Map.Entry<String,Registration> entrySet : registration.entrySet()){
+            if(entrySet.getValue().getHopeField().equals("개발자")){ // == 의 경우 비교 연산이 이뤄지지 않음
+                count = hopeFields.get(0);
+                hopeFields.set(0,count+1);
+            }
+            else if(entrySet.getValue().getHopeField().equals("기획자")){
+                count = hopeFields.get(1);
+                hopeFields.set(1,count+1);
+            }
+            else if(entrySet.getValue().getHopeField().equals("디자이너")){
+                count = hopeFields.get(2);
+                hopeFields.set(2,count+1);
+            }
+            else{
+                // 예외 처리
+            }
+        }
+        return hopeFields;
+    }
+
 }
\ No newline at end of file
diff --git a/src/main/java/com/econovation/third_project/database/Path.java b/src/main/java/com/econovation/third_project/database/Path.java
index 727433c..1bd9b6a 100644
--- a/src/main/java/com/econovation/third_project/database/Path.java
+++ b/src/main/java/com/econovation/third_project/database/Path.java
@@ -8,5 +8,5 @@
 public class Path {
     String registrationId;
     // 지원 경로
-    private String supportPath;
+    private PathType supportPath;
 }
diff --git a/src/main/java/com/econovation/third_project/database/PathType.java b/src/main/java/com/econovation/third_project/database/PathType.java
new file mode 100644
index 0000000..41334ac
--- /dev/null
+++ b/src/main/java/com/econovation/third_project/database/PathType.java
@@ -0,0 +1,18 @@
+package com.econovation.third_project.database;
+
+public enum PathType {
+    POSTER("홍보 포스터"),
+    ANNOUNCEMENT("학과 공지사항"),
+    INTRODUCTION("지인 소개"),
+    INSTAGRAM("인스타그램"),
+    EVERYTIME("에브리타임"),
+    ETIC("기타");
+
+    final private String type;
+    public String getType(){
+        return type;
+    }
+    private PathType(String type){
+        this.type = type;
+    }
+}
diff --git a/src/main/java/com/econovation/third_project/service/RegistrationService.java b/src/main/java/com/econovation/third_project/service/RegistrationService.java
new file mode 100644
index 0000000..ec3aa12
--- /dev/null
+++ b/src/main/java/com/econovation/third_project/service/RegistrationService.java
@@ -0,0 +1,88 @@
+package com.econovation.third_project.service;
+
+import com.econovation.third_project.database.*;
+import lombok.AllArgsConstructor;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+@Service
+@AllArgsConstructor
+public class RegistrationService {
+    private final Database database;
+
+    // 지원자 등록
+    public void register(Registration registration){
+        database.register(registration);
+    }
+
+    // 개인 정보 등록
+    public void registerPersonalInform(PersonalInformation personalInformation){database.savePersonalInformation(personalInformation);}
+
+    // 지원 경로 정보 등록
+    public void registerPath(Path path){database.savePath(path);}
+
+    // 면접 가능 시간 등록
+    public void registerDesiredTime(DesiredTime desiredTime){database.saveDesiredTime(desiredTime);}
+
+    // 전체 지원자 수 누적 합
+    public int getRegistrationCount(){
+        return database.getRegistrationCount();
+    }
+
+    // 각 분야별 합
+    // database의 registration을 조회, 조회하면서 getRegistration을 통해 Registration을 가져옴
+    // 들어있는 분야 별로 Count하기 (개발자, 기획자, 디자이너)
+    public ArrayList<Integer> getHopeFieldsTotalCount(){
+        return database.getHopeFieldsTotalCount();
+    }
+
+    // 희망 분야별 합
+    // 등록시 1지망 2지망을 나눠서 토탈 카운트
+    // 희망 분야별 합은 service 파일에서 작성
+    public Map<String, Integer> getHopeFieldsFirstPriorityCount() {
+        Map<String, Integer> firstHopeFieldCount = new HashMap<>();
+        for (Registration registration : database.getAllRegistrations().values()) {
+            String firstHopeField = registration.getFirstPriority();
+            firstHopeFieldCount.put(firstHopeField, firstHopeFieldCount.getOrDefault(firstHopeField, 0) + 1); // getOrDefault
+        }
+        return firstHopeFieldCount;
+    }
+
+    public Map<String, Integer> getHopeFieldsSecondPriorityCount() {
+        Map<String, Integer> secondHopeFieldCount = new HashMap<>();
+        for (Registration registration : database.getAllRegistrations().values()) {
+            String secondHopeField = registration.getSecondPriority();
+            secondHopeFieldCount.put(secondHopeField, secondHopeFieldCount.getOrDefault(secondHopeField, 0) + 1);
+        }
+        return secondHopeFieldCount;
+    }
+
+    // 소속 학과 합
+    public Map<String,Integer> getDepartmentCount(){
+        Map<String,Integer> departmentCount = new HashMap<>();
+        for(PersonalInformation personalInformation : database.getAllPersionalInformation().values()){
+            String major = personalInformation.getMajor();
+            departmentCount.put(major, departmentCount.getOrDefault(major,0)+1);
+        }
+        return departmentCount;
+    }
+
+    // 지원 경로 통계
+    public Map<String,Integer> getPathCount(){
+        Map<String,Integer> pathCount = new HashMap<>();
+        for(Path path : database.getAllPath().values()){
+            String p = path.getSupportPath().getType();
+            pathCount.put(p,pathCount.getOrDefault(p,0)+1);
+        }
+        return pathCount;
+    }
+
+    // 면접 희망 시간 통계
+
+
+}
diff --git a/src/main/resources/application.properties b/src/main/resources/application.properties
index 1993f05..b19a37d 100644
--- a/src/main/resources/application.properties
+++ b/src/main/resources/application.properties
@@ -1 +1,2 @@
 spring.application.name=HellStudy
+