diff --git a/lang/en/studentquiz.php b/lang/en/studentquiz.php
index 4a9949d9..061ddaff 100644
--- a/lang/en/studentquiz.php
+++ b/lang/en/studentquiz.php
@@ -37,6 +37,7 @@
 $string['after_submission_end_date'] = 'This StudentQuiz closed for question submission on {$a}.';
 $string['answeringndbeforestart'] = 'Answering deadline can not be specified before the open for answering date';
 $string['anonymous_user_name'] = 'Anonymous User #{$a}';
+$string['anonymous_user'] = 'Anonymous User';
 $string['api_state_change_success_content'] = 'Question state/visibility changed successfully';
 $string['api_state_change_success_title'] = 'Success';
 $string['api_state_change_error_title'] = 'Error deleting question';
diff --git a/renderer.php b/renderer.php
index 5051edd0..4bc0a82b 100644
--- a/renderer.php
+++ b/renderer.php
@@ -1750,7 +1750,7 @@ public function render_comment_nav_tabs($studentquizquestion, $userid, $highligh
 
         if (utils::can_view_state_history($cm->id, $question)) {
             $statehistoryrenderer = $this->page->get_renderer('mod_studentquiz', 'state_history');
-            $statehistorytab = $statehistoryrenderer->state_history_table($studentquizquestion->get_id());
+            $statehistorytab = $statehistoryrenderer->state_history_table($studentquizquestion);
             $tabs[] = [
                 'id' => 'state_history-tab',
                 'name' => get_string('history', 'mod_studentquiz'),
@@ -1875,10 +1875,10 @@ class mod_studentquiz_state_history_renderer extends mod_studentquiz_renderer {
     /**
      * Render state history table.
      *
-     * @param int $studentquizquestionid studentquizquestion id.
+     * @param studentquiz_question $studentquizquestion studentquiz question object.
      * @return string The content render.
      */
-    public function state_history_table($studentquizquestionid): string {
+    public function state_history_table(studentquiz_question $studentquizquestion): string {
 
         $table = new html_table();
         $table->head = [
@@ -1886,6 +1886,7 @@ public function state_history_table($studentquizquestionid): string {
             get_string('action', 'question'),
         ];
 
+        $studentquizquestionid = $studentquizquestion->get_id();
         list($statehistories, $users) = utils::get_state_history_data($studentquizquestionid);
 
         if (get_string_manager()->string_exists('strftimedatetimeshortaccurate', 'core_langconfig')) {
@@ -1894,8 +1895,11 @@ public function state_history_table($studentquizquestionid): string {
             $formatdate = get_string('strftimedatetimeshort', 'core_langconfig');
         }
 
+        $commentarea = new container($studentquizquestion);
+        $canviewusername = $commentarea->can_view_username();
         foreach ($statehistories as $statehistory) {
-            $author = !empty($users[$statehistory->userid]) ? $this->action_author($users[$statehistory->userid]) : '-';
+            $author = !empty($users[$statehistory->userid]) ?
+                $this->action_author($users[$statehistory->userid], $canviewusername) : '-';
             $table->data[] = [
                 userdate($statehistory->timecreated, $formatdate),
                 $this->get_desc_action($statehistory->state) . ' ' . $author
@@ -1910,15 +1914,21 @@ public function state_history_table($studentquizquestionid): string {
      * Action author's profile link.
      *
      * @param stdClass $user The user object.
+     * @param bool $canviewusername Whether user have permission to view other user name.
      * @return string The link to user's profile.
      */
-    public function action_author(\stdClass $user): string {
+    public function action_author(\stdClass $user, bool $canviewusername): string {
+        global $USER;
         if ($user->deleted) {
             return html_writer::div(get_string('deleteduser', 'mod_forum'));
         }
-
-        return html_writer::link(new moodle_url('/user/view.php', ['id' => $user->id, 'course' => $this->page->course->id]),
+        $username = html_writer::link(new moodle_url('/user/view.php',
+            ['id' => $user->id, 'course' => $this->page->course->id]),
             fullname($user), ['class' => 'd-table-cell']);
+        if (!$canviewusername && $user->id !== $USER->id) {
+            $username = get_string('anonymous_user', 'mod_studentquiz');
+        }
+        return $username;
     }
 
     /**
diff --git a/tests/behat/comment_area_create.feature b/tests/behat/comment_area_create.feature
index 5e3de029..f566d666 100644
--- a/tests/behat/comment_area_create.feature
+++ b/tests/behat/comment_area_create.feature
@@ -565,3 +565,24 @@ Feature: Create comment as an user
     And I wait until ".studentquiz-comment-item:nth-child(1)" "css_element" exists
     Then I should see "Comment 1" in the ".studentquiz-comment-item:nth-child(1) .studentquiz-comment-text" "css_element"
     And I should not see "Edit" in the ".studentquiz-comment-item:nth-child(1) .studentquiz-comment-commands-box" "css_element"
+
+  @javascript
+  Scenario: Test show anonymous user on state history table.
+    Given I am on the "StudentQuiz 3" "mod_studentquiz > View" page logged in as "student1"
+    And I click on "Create new question" "button"
+    And I set the field "item_qtype_truefalse" to "1"
+    And I click on "Add" "button" in the "Choose a question type to add" "dialogue"
+    And I set the field "Question name" to "Question of Student 1"
+    And I set the field "Question text" to "The correct answer is true"
+    And I press "id_submitbutton"
+    And I am on the "StudentQuiz 3" "mod_studentquiz > View" page logged in as "teacher"
+    And I choose "Preview" action for "Question of Student 1" in the question bank
+    And I switch to "questionpreview" window
+    And I set the field "statetype" to "Approved"
+    And I click on "Change state" "button"
+    And I press "Close"
+    And I am on the "StudentQuiz 3" "mod_studentquiz > View" page logged in as "student1"
+    And I choose "Preview" action for "Question of Student 1" in the question bank
+    And I switch to "questionpreview" window
+    When I click on "History" "link"
+    Then I should see "Question set to 'Approved' Anonymous User"