diff --git a/pav-server/src/main/java/com/palnet/biz/api/comn/sms/service/ComnSmsService.java b/pav-server/src/main/java/com/palnet/biz/api/comn/sms/service/ComnSmsService.java
index 198f635..a149ec5 100644
--- a/pav-server/src/main/java/com/palnet/biz/api/comn/sms/service/ComnSmsService.java
+++ b/pav-server/src/main/java/com/palnet/biz/api/comn/sms/service/ComnSmsService.java
@@ -33,6 +33,10 @@ public class ComnSmsService {
 
     private final SuredataRepository suredataRepository;
 
+    /**
+     * 비행승인시 SMS를 보내는 기능.
+     * @param model
+     */
     public void sendLaancAprovSms(ComnSmsLaancAprovModel model) {
         log.info("sendSms : {}", model);
         ClassPathResource resource = new ClassPathResource("templates/sms/SmsLaancAprov.txt");
@@ -78,6 +82,12 @@ public class ComnSmsService {
         suredataRepository.save(entity);
     }
 
+    /**
+     * 내부적으로 사용할 메소드, 메세지 템플릿과, 객체의 파라미터를 매핑함.
+     * @param templateStr
+     * @param model
+     * @return
+     */
     private String getMessage(String templateStr, ComnSmsLaancAprovModel model) {
         String message = templateStr;
         message = message.replace("${pilotName}", model.getPilotName());
@@ -89,6 +99,10 @@ public class ComnSmsService {
         return message;
     }
 
+    /**
+     * 데이터베이스에 추가할 메세지 발송이력 데이터를 셋팅함.
+     * @return
+     */
     public SuredataEntity getInitialEntity() {
         String nowStr = InstantUtils.toDatetimeStringByFormat(Instant.now(), "yyyyMMddHHmmss");
         SuredataEntity entity = new SuredataEntity();