diff --git a/src/main/java/kr/co/preq/domain/preq/service/OpenAIService.java b/src/main/java/kr/co/preq/domain/preq/service/OpenAIService.java
index d22029f..d8e8e65 100644
--- a/src/main/java/kr/co/preq/domain/preq/service/OpenAIService.java
+++ b/src/main/java/kr/co/preq/domain/preq/service/OpenAIService.java
@@ -46,13 +46,16 @@ public class OpenAIService {
 
 	public List<String> generateQuestions(String question, String answer, List<SessionDto> sessionDtoList) {
 		List<Message> sessions = new ArrayList<>();
-		sessionDtoList.forEach((a) -> {
-			sessions.add(new Message("user", makeUserPrompt(a.getQuestion(), a.getAnswer())));
-			sessions.add(new Message("assistant", a.getPreqList().toString()));
+
+		for (int i = 0; i < sessionDtoList.size() - 1; i++) {
+			sessions.add(new Message("user", makeUserPrompt(sessionDtoList.get(i).getQuestion(),
+				sessionDtoList.get(i).getAnswer())));
+			sessions.add(new Message("assistant", sessionDtoList.get(i+1).getQuestion()));
 			System.out.println("session--------");
-			System.out.println(makeUserPrompt(a.getQuestion(), a.getAnswer()));
-			System.out.println(a.getPreqList().toString());
-		});
+			System.out.println(makeUserPrompt(sessionDtoList.get(i).getQuestion(),
+				sessionDtoList.get(i).getAnswer()));
+			System.out.println(sessionDtoList.get(i+1).getQuestion());
+		}
 
 		String prompt = makeUserPrompt(question, answer);
 		System.out.println("new---------");
diff --git a/src/main/java/kr/co/preq/domain/preq/service/PreqService.java b/src/main/java/kr/co/preq/domain/preq/service/PreqService.java
index 7108d15..62dc8bc 100644
--- a/src/main/java/kr/co/preq/domain/preq/service/PreqService.java
+++ b/src/main/java/kr/co/preq/domain/preq/service/PreqService.java
@@ -51,7 +51,7 @@ public PreqAndKeywordResponseDto createPreqAndKeyword(Long applicationChildId) {
 			.findAllByApplicationChildIdOrderByParentIdAscNullsFirstCategoryIdAsc(applicationChildId);
 
 		List<SessionDto> parentApplicationChilds = allApplicationChilds
-			.subList(0, allApplicationChilds.size()-1)	// remove first element (=self)
+			// .subList(0, allApplicationChilds.size()-1)	// remove first element (=self)
 			.stream().map((a) -> {
 				List<Preq> preqList = preqRepository.findPreqsByApplicationChildIdAndIsDeleted(a.getId(), false);
 				return new SessionDto(a.getQuestion(), a.getAnswer(), preqList.stream().map((p) -> p.getQuestion()).collect(
@@ -64,13 +64,14 @@ public PreqAndKeywordResponseDto createPreqAndKeyword(Long applicationChildId) {
 		// manufacturing chatGPT response
 		List<String> cutQuestions = new ArrayList<>();
 		questions.forEach(q -> {
-			if (q.contains(": ")) {
-				String[] str = q.split(": ");
-				cutQuestions.add(str[1]);
-			} else {
-				cutQuestions.add(q);
+				if (q.contains(": ")) {
+					String[] str = q.split(": ");
+					cutQuestions.add(str[1].replaceAll("[^ㄱ-ㅎㅏ-ㅣ가-힣a-zA-Z0-9,.? ]", ""));
+				} else {
+					cutQuestions.add(q.replaceAll("[^ㄱ-ㅎㅏ-ㅣ가-힣a-zA-Z0-9,.? ]", ""));
+				}
 			}
-		});
+		);
 
 		// soft delete old preQuestions
 		List<Preq> oldPreqList = preqRepository.findPreqsByApplicationChildIdAndIsDeleted(applicationChildId, false);