diff --git a/openwrt_github_hosts.lua b/openwrt_github_hosts.lua
new file mode 100644
index 0000000000000000000000000000000000000000..699394a57c4c5a9634c3b8827aa198b5f43b45a5
--- /dev/null
+++ b/openwrt_github_hosts.lua
@@ -0,0 +1,92 @@
+--[[
+脚本名称: openwrt_github_hosts.lua
+脚本描述: 用于 openwrt 自动更新 github 的 hosts 文件，
+		可以手动 lua /path/to/openwrt_github_hosts.lua，
+		或者添加 crontab 定时任务自动执行。
+作者: crazyevent
+日期: 2025-07-22
+]]--
+
+-- 读取文件每一行
+local function read_lines(filename)
+    local lines = {}
+    local file, err = io.open(filename, "r")
+    if not file then
+        error("File not found: " .. err)
+        return lines
+    end
+    
+    local i = 0
+    for line in file:lines() do
+        i = i + 1
+        lines[i] = line
+    end
+    file:close()
+    
+    return lines
+end
+
+-- 创建新 hosts 临时文件
+local function update_hosts(src_file, old_file, modify_file)
+    -- 创建或覆盖一个新文件用于写入修改后的内容
+    local new_file, err = io.open(modify_file, "w")
+    if not new_file then
+        error("File create failed: " .. err)
+        return 0
+    end
+    
+    -- 逐行读取并替换字符串
+    local src_lines = read_lines(src_file)
+    local old_lines = read_lines(old_file)
+    local isStart = false
+    local index = 0
+    for _, line in ipairs(old_lines) do
+        while true do
+            local pos = string.find(line, "(.*)start(.*)")
+            if pos then
+                print("Insert position found: " .. pos)
+                isStart = true
+            end
+            if not isStart then
+                new_file:write(line .. "\n")
+                print('Skip ' .. line)
+                break
+            end
+            index = index + 1
+            -- 替换字符串
+            local new_line = src_lines[index]
+            new_file:write(new_line .. "\n")
+            print("Add " .. new_line)
+            break
+        end
+    end
+
+    -- 如果没有找到起始标记，就直接把 src 内容附加到 new file 后面
+    if not isStart then
+        for _, line in ipairs(src_lines) do
+            index = index + 1
+            new_file:write(line .. "\n")
+            print("Add " .. line)
+        end
+    end
+    
+    -- 关闭文件
+    new_file:close()
+	return index
+end
+
+local function do_update()
+    os.execute("rm -rf /tmp/tmp/hosts")
+    if os.execute("wget -P /tmp/tmp/ https://gitee.com/if-the-wind/github-hosts/raw/main/hosts") == 0 then
+        local ret = update_hosts("/tmp/tmp/hosts", "/etc/hosts", "/tmp/tmp/hosts.new")
+        if (os.execute("rm -rf /tmp/tmp/hosts") == 0
+           and os.execute("cp /etc/hosts /etc/hosts.bak") == 0
+           and os.execute("mv /tmp/tmp/hosts.new /etc/hosts") == 0
+           and os.execute("/etc/init.d/dnsmasq restart") == 0) then
+            print('Update ' .. tostring(ret) .. ' lines')
+        end
+    end
+end
+
+do_update()
+