diff --git a/application/views/mobile_first/ch-info-page-form.php b/application/views/mobile_first/ch-info-page-form.php
index f9435a45..23a4db2e 100644
--- a/application/views/mobile_first/ch-info-page-form.php
+++ b/application/views/mobile_first/ch-info-page-form.php
@@ -754,13 +754,28 @@ function validateQuickInquiryForm() {
     var emailErrEl = document.getElementById("email_errmsg");
     var emailVerifyErrEl = document.getElementById("email_verify_errmsg");
     var phoneErrEl = document.getElementById("phone_errmsg");
+    var travelGroupErrEl = document.getElementById("group_error_msg");
 
     if (realnameErrEl) realnameErrEl.style.display = 'none';
     if (emailErrEl) emailErrEl.style.display = 'none';
     if (emailVerifyErrEl) emailVerifyErrEl.style.display = 'none';
     if (startingDateErrEl) startingDateErrEl.style.display = 'none';
     if (phoneErrEl) phoneErrEl.style.display = 'none';
+    if (travelGroupErrEl) travelGroupErrEl.style.display = 'none';
 
+    var travelGroupList = document.querySelectorAll('input[name="travel group"]');
+    var travelGroupChecked = false;
+    travelGroupList.forEach(function(groupNode) {
+      if (groupNode.checked) {
+        travelGroupChecked = true;
+      }
+    });
+
+    if (!travelGroupChecked) {
+      travelGroupErrEl.style.display = '';
+      result = false;
+    }
+    
     if (realnameVal === '') {
         realnameErrEl.style.display = '';
         result = false;
diff --git a/application/views/mobile_first/ch-inquiry-form.php b/application/views/mobile_first/ch-inquiry-form.php
index 920d3bdd..bfa3de3a 100644
--- a/application/views/mobile_first/ch-inquiry-form.php
+++ b/application/views/mobile_first/ch-inquiry-form.php
@@ -754,12 +754,27 @@ function validateQuickInquiryForm() {
     var emailErrEl = document.getElementById("email_errmsg");
     var emailVerifyErrEl = document.getElementById("email_verify_errmsg");
     var phoneErrEl = document.getElementById("phone_errmsg");
+    var travelGroupErrEl = document.getElementById("group_error_msg");
 
     if (realnameErrEl) realnameErrEl.style.display = 'none';
     if (emailErrEl) emailErrEl.style.display = 'none';
     if (emailVerifyErrEl) emailVerifyErrEl.style.display = 'none';
     if (startingDateErrEl) startingDateErrEl.style.display = 'none';
     if (phoneErrEl) phoneErrEl.style.display = 'none';
+    if (travelGroupErrEl) travelGroupErrEl.style.display = 'none';
+
+    var travelGroupList = document.querySelectorAll('input[name="travel group"]');
+    var travelGroupChecked = false;
+    travelGroupList.forEach(function(groupNode) {
+      if (groupNode.checked) {
+        travelGroupChecked = true;
+      }
+    });
+
+    if (!travelGroupChecked) {
+      travelGroupErrEl.style.display = '';
+      result = false;
+    }
 
     if (realnameVal === '') {
         realnameErrEl.style.display = '';