diff --git a/src/controller/inn.rs b/src/controller/inn.rs
index 6d0adf9f..8c81c1d5 100644
--- a/src/controller/inn.rs
+++ b/src/controller/inn.rs
@@ -1873,6 +1873,13 @@ pub(crate) async fn comment_hide(
     comment.is_hidden = !comment.is_hidden;
 
     set_one_with_key(&DB, "post_comments", k, &comment)?;
+    add_notification(
+        &DB,
+        comment.uid,
+        NtType::CommentHide,
+        comment.pid,
+        comment.cid,
+    )?;
 
     let target = format!("/post/{iid}/{pid}");
     Ok(Redirect::to(&target))
@@ -2014,6 +2021,7 @@ pub(crate) async fn post_lock(
 
     if User::is_mod(&DB, claim.uid, iid)? || Role::from(claim.role) == Role::Admin {
         if post.status != PostStatus::LockedByMod {
+            add_notification(&DB, post.uid, NtType::PostLock, claim.uid, post.pid)?;
             post.status = PostStatus::LockedByMod
         } else if post.status == PostStatus::LockedByMod {
             post.status = PostStatus::Normal
@@ -2047,6 +2055,7 @@ pub(crate) async fn post_hide(
 
     if User::is_mod(&DB, claim.uid, iid)? || Role::from(claim.role) == Role::Admin {
         if post.status != PostStatus::HiddenByMod {
+            add_notification(&DB, post.uid, NtType::PostHide, claim.uid, post.pid)?;
             post.status = PostStatus::HiddenByMod
         } else if post.status == PostStatus::HiddenByMod {
             post.status = PostStatus::Normal
diff --git a/src/controller/notification.rs b/src/controller/notification.rs
index 60a59410..7d4b4058 100644
--- a/src/controller/notification.rs
+++ b/src/controller/notification.rs
@@ -43,6 +43,9 @@ pub enum NtType {
     Message = 7,
     SoloDelete = 8,
     ImageDelete = 9,
+    PostLock = 10,
+    PostHide = 11,
+    CommentHide = 12,
 }
 
 impl From<u8> for NtType {
@@ -57,6 +60,9 @@ impl From<u8> for NtType {
             7 => Self::Message,
             8 => Self::SoloDelete,
             9 => Self::ImageDelete,
+            10 => Self::PostLock,
+            11 => Self::PostHide,
+            12 => Self::CommentHide,
             _ => unreachable!(),
         }
     }
@@ -204,6 +210,62 @@ pub(crate) async fn notification(
                     tree.remove(&key)?;
                 };
             }
+            NtType::PostHide => {
+                let uid = u8_slice_to_u32(&value[0..4]);
+                let user: User = get_one(&DB, "users", uid)?;
+                let pid = u8_slice_to_u32(&value[4..8]);
+                let post: Post = get_one(&DB, "posts", pid)?;
+                let content2 = format!(
+                    "{} has hidden your post <a href='/post/{}/{}?nid={}'>{}</a>",
+                    user.username, post.iid, pid, nid, post.title
+                );
+                let notification = Notification {
+                    nid,
+                    uid: post.uid,
+                    content1: String::new(),
+                    content2,
+                    is_read,
+                };
+                notifications.push(notification);
+            }
+            NtType::PostLock => {
+                let uid = u8_slice_to_u32(&value[0..4]);
+                let user: User = get_one(&DB, "users", uid)?;
+                let pid = u8_slice_to_u32(&value[4..8]);
+                let post: Post = get_one(&DB, "posts", pid)?;
+                let content2 = format!(
+                    "{} has locked your post <a href='/post/{}/{}?nid={}'>{}</a>",
+                    user.username, post.iid, pid, nid, post.title
+                );
+                let notification = Notification {
+                    nid,
+                    uid: post.uid,
+                    content1: String::new(),
+                    content2,
+                    is_read,
+                };
+                notifications.push(notification);
+            }
+            NtType::CommentHide => {
+                if let Some(v) = &DB.open_tree("post_comments")?.get(&value[0..8])? {
+                    let (comment, _): (Comment, usize) = bincode::decode_from_slice(v, standard())?;
+                    let post: Post = get_one(&DB, "posts", comment.pid)?;
+                    let content1 = format!(
+                        "Your comment on <a href='/post/{}/{}?nid={}#{}'>{}</a> has been hidden",
+                        post.iid, comment.pid, nid, comment.cid, post.title
+                    );
+                    let notification = Notification {
+                        nid,
+                        uid: comment.uid,
+                        content1,
+                        content2: unescape(&comment.content).unwrap(),
+                        is_read,
+                    };
+                    notifications.push(notification);
+                } else {
+                    tree.remove(&key)?;
+                };
+            }
             NtType::SoloComment => {
                 let sid1 = u8_slice_to_u32(&value[0..4]);
                 let sid2 = u8_slice_to_u32(&value[4..8]);