diff --git a/src/app/components/myPageComponents/BasicUserInfoEditingSpace.tsx b/src/app/components/myPageComponents/BasicUserInfoEditingSpace.tsx
index 6f955b0..cdcf556 100644
--- a/src/app/components/myPageComponents/BasicUserInfoEditingSpace.tsx
+++ b/src/app/components/myPageComponents/BasicUserInfoEditingSpace.tsx
@@ -110,6 +110,7 @@ const BasicUserInfoEditingSpace: React.FC<BasicUserInfoEditingSpace> = ({
               onChange={(e) => {
                 handlePutUserInfo("name", e.target.value);
               }}
+              maxLength={10}
               css={editInfoStyles.input}
             />
           </section>
diff --git a/src/app/components/newHomePageComponents/NavBar.tsx b/src/app/components/newHomePageComponents/NavBar.tsx
index d683952..1fa92bf 100644
--- a/src/app/components/newHomePageComponents/NavBar.tsx
+++ b/src/app/components/newHomePageComponents/NavBar.tsx
@@ -110,7 +110,7 @@ const NavBar = () => {
         >
           {isCookiesThere && (
             <>
-              좋은 하루 되세요, <strong>{cookieNickname}</strong>님
+              안녕하세요, <strong>{cookieNickname}</strong>님
             </>
           )}
         </p>
diff --git a/src/app/components/ptpComponents/sections/ProjectName.tsx b/src/app/components/ptpComponents/sections/ProjectName.tsx
index 6e560c2..254e17f 100644
--- a/src/app/components/ptpComponents/sections/ProjectName.tsx
+++ b/src/app/components/ptpComponents/sections/ProjectName.tsx
@@ -21,12 +21,15 @@ const ProjectName = () => {
       <hr />
       <input
         autoComplete="off"
-        onFocus={() => setGuideMessage("프로젝트 이름은 무엇인가요?")}
+        onFocus={() =>
+          setGuideMessage("프로젝트 이름은 무엇인가요? (최대 10자)")
+        }
         onChange={(e) => setDynamicQuestions("name", e.target.value)}
         id="name"
         type="text"
         value={dynamicQuestionsContainer.name}
         css={[inputStyles.style1]}
+        maxLength={10}
       />
     </div>
   );
diff --git a/src/app/components/signUpPageComponents/componentsForIndiCorp/SignUpInputs.tsx b/src/app/components/signUpPageComponents/componentsForIndiCorp/SignUpInputs.tsx
index 5f081b1..100ba33 100644
--- a/src/app/components/signUpPageComponents/componentsForIndiCorp/SignUpInputs.tsx
+++ b/src/app/components/signUpPageComponents/componentsForIndiCorp/SignUpInputs.tsx
@@ -35,10 +35,13 @@ const SignUpInputs: React.FC<AboutSignUpInputs> = ({
       />
       <input
         autoComplete="off"
-        onFocus={() => setGuideMessage(`${textForGuide}을 입력해 주세요.`)}
+        onFocus={() =>
+          setGuideMessage(`${textForGuide}을 입력해 주세요.(최대 10자)`)
+        }
         onChange={(e) => handlePutInfo("name", e.target.value)}
         type="text"
         placeholder={nicknameCompanyPlaceHolder}
+        maxLength={10}
         css={[inputStyles.style1, `height: 50px;`]}
       />
       <div css={[flexCenterX2, `position: relative; width: 100%`]}>