diff --git a/kplayer/core/NetworkManager.swift b/kplayer/core/NetworkManager.swift
index 3935c0c..d61f092 100644
--- a/kplayer/core/NetworkManager.swift
+++ b/kplayer/core/NetworkManager.swift
@@ -401,12 +401,6 @@ class NetworkManager {
         }
     }
 
-    func favItem(_ item: MediaItem) {
-        let url = baseurl + "/service/linkfav" + item.fullPath
-
-        AF.request(url)
-    }
-
     func isBlack(_ item: MediaItem) -> Bool {
         let url = URL(string: NetworkManager.sharedInstance.vidurl)?.appendingPathComponent("ren").appendingPathComponent("black.txt")
 
diff --git a/kplayer/core/ThumbnailCache.swift b/kplayer/core/ThumbnailCache.swift
index 147b23f..f6f0961 100644
--- a/kplayer/core/ThumbnailCache.swift
+++ b/kplayer/core/ThumbnailCache.swift
@@ -125,25 +125,6 @@ class ThumbnailCache {
 
         preview = preview.addingPercentEncoding(withAllowedCharacters: NSCharacterSet.urlQueryAllowed)!
 
-        let u2 = "\(NetworkManager.sharedInstance.baseurl)/service/preload?preview=\(preview)"
-        let u3 = URL(string: u2)
-
-        if let URL = u3 {
-            let time = dateFormatter.string(from: Date())
-            print("\(time) preload image \(u2)")
-
-            urlSession!.dataTask(with: URL, completionHandler: {
-                        (da, response, error) in
-                        if let d = da {
-                            DispatchQueue.global(qos: .default).async {
-                                () -> Void in
-                                self.loadData(d, start: start, end: end)
-                            }
-                        }
-                    }) .resume()
-        } else {
-            print("## Invalid URL: \(u2)")
-        }
     }
 
     func cancel() {
diff --git a/kplayer/detail/DetailViewController.swift b/kplayer/detail/DetailViewController.swift
index 0b37c99..0aa2ced 100644
--- a/kplayer/detail/DetailViewController.swift
+++ b/kplayer/detail/DetailViewController.swift
@@ -24,7 +24,6 @@ protocol DetailDelegate {
     func deleteThumb(selectedItem: MediaItem)
     func deleteLocal(selectedItem: MediaItem)
     func saveItem(selectedItem: MediaItem)
-    func favItem(_ item: MediaItem)
     func settings() -> KSettings
     func offline() -> Bool
 }
diff --git a/kplayer/master/NetworkDelegate.swift b/kplayer/master/NetworkDelegate.swift
index 764bd95..6aa84a0 100644
--- a/kplayer/master/NetworkDelegate.swift
+++ b/kplayer/master/NetworkDelegate.swift
@@ -138,9 +138,6 @@ class NetworkDelegate: MasterDelegate, DetailDelegate {
         }
     }
 
-    func favItem(_ item: MediaItem) {
-        NetworkManager.sharedInstance.favItem(item)
-    }
 
     func deleteLocal(selectedItem: MediaItem) {
         LocalManager.sharedInstance.deleteLocal(selectedItem: selectedItem)