diff --git a/README.md b/README.md
index ba1ae61..5a8d998 100644
--- a/README.md
+++ b/README.md
@@ -13,6 +13,7 @@ Features:
 - Support setting execution users and user groups for processes
 - Support multiple platforms: Windows, Linux, MacOS, etc.
 - Support for collecting output content from task processes.
+- Support for plugin development based on process start and stop events.
 - Provide a Web Page for Task Management.
 - The project only needs to pre-install the Melang interpreter, and no more others need to be installed.
 
diff --git a/controllers/proc.m b/controllers/proc.m
index 6ad11c2..c86f536 100644
--- a/controllers/proc.m
+++ b/controllers/proc.m
@@ -20,7 +20,7 @@
 	        ['field': 'user', 'type': 'string', 'required': false,],
 	        ['field': 'group', 'type': 'string', 'required': false,],
                 ['field': 'replica', 'type': 'int', 'required': false, 'default': 1],
-                ['field': 'interval', 'type': 'int', 'required': false, 'default': 3],
+                ['field': 'interval', 'type': 'int', 'required': false, 'default': 3000],
                 ['field': 'deps', 'type': 'array', 'required': false, 'element_type': 'string', 'default': []],
             ],
             'args': [
diff --git a/coroutines/http.m b/coroutines/http.m
index 050813a..29bb3cf 100644
--- a/coroutines/http.m
+++ b/coroutines/http.m
@@ -14,15 +14,6 @@
         conf = d['conf'];
         name = conf['name'];
         if (Tasks[name]['type'] == 'daemon') {
-            msg = "Daemon Task " + name + " (" + d['alias'];
-            if (conf['user'] || conf['group']) {
-                msg += " running as ";
-                conf['user'] && (msg += conf['user']);
-                msg += ':';
-                conf['group'] && (msg += conf['group']);
-            } fi
-            msg += ") start";
-            Log('info', msg);
             Eval('@/../coroutines/task.m', data, false, d['alias']);
         } else {
             Tasks[name] && --(Tasks[name]['running']);
diff --git a/coroutines/task.m b/coroutines/task.m
index 4d012bf..da68e70 100644
--- a/coroutines/task.m
+++ b/coroutines/task.m
@@ -1,4 +1,4 @@
-#include "@/../utils/log.m"
+#include "@/../utils/event.m"
 
 j = Import('json');
 s = Import('sys');
@@ -15,17 +15,10 @@
     s.msleep(interval);
 } fi
 
-s.exec(cmd, -1, pid, conf['user'], conf['group'], alias);
+process_start_event = data;
 
-msg = "Process " + pid + " (" + alias;
-if (conf['user'] || conf['group']) {
-    msg += " running as ";
-    conf['user'] && (msg += conf['user']);
-    msg += ':';
-    conf['group'] && (msg += conf['group']);
-} fi
-msg += ") exit";
-Log('info', msg);
+s.exec(cmd, -1, data['pid'], conf['user'], conf['group'], alias);
 
+process_stop_event = data;
 
 m.send('http', EVAL_DATA);
diff --git a/events/example.m b/events/example.m
new file mode 100644
index 0000000..975ef52
--- /dev/null
+++ b/events/example.m
@@ -0,0 +1,15 @@
+#if !M_EV_EXAMPLE
+#define M_EV_EXAMPLE
+
+Sys = Import('sys');
+
+Example {
+    @start(&proc) {
+        Sys.print(proc);
+    }
+    @stop(&proc) {
+        Sys.print(proc);
+    }
+}
+
+#endif
diff --git a/meproc.m b/meproc.m
index 43f6a1e..a66c8bf 100644
--- a/meproc.m
+++ b/meproc.m
@@ -10,7 +10,7 @@
     return;
 } fi
 
-Log('info', "Meproc v1.0.5. Listen on: " + Conf['ip'] + ':' + Conf['port']);
+Log('info', "Meproc v1.0.6. Listen on: " + Conf['ip'] + ':' + Conf['port']);
 
 Eval('@/coroutines/http.m');
 Eval('@/coroutines/bootstrap.m', nil, false, 'bootstrap');
diff --git a/utils/event.m b/utils/event.m
new file mode 100644
index 0000000..e4b482c
--- /dev/null
+++ b/utils/event.m
@@ -0,0 +1,72 @@
+#if !M_EVENT
+#define M_EVENT
+
+#include "@/log.m"
+#include "@/../events"
+
+Sys = Import('sys');
+Str = Import('str');
+
+process_start_event = nil;
+process_stop_event = nil;
+
+@start_event_handler(&proc) {
+    conf = proc['conf'];
+    alias = proc['alias'];
+    type = conf['type'];
+
+    msg = Str.capitalize(type) + " Process (" + alias;
+    if (conf['user'] || conf['group']) {
+        msg += " running as ";
+        conf['user'] && (msg += conf['user']);
+        msg += ':';
+        conf['group'] && (msg += conf['group']);
+    } fi
+    msg += ") start";
+    Log('info', msg);
+
+    name = Str.capitalize(proc['conf']['name']);
+    o = $name;
+    if (!o || !Sys.has(o, 'start'))
+        return;
+    fi
+    o.start(proc);
+    Sys.print(name);
+}
+
+@stop_event_handler(&proc) {
+    conf = proc['conf'];
+    alias = proc['alias'];
+    pid = proc['pid'];
+    type = conf['type'];
+
+    msg = Str.capitalize(type) + " Process " + pid + " (" + alias;
+    if (conf['user'] || conf['group']) {
+        msg += " running as ";
+        conf['user'] && (msg += conf['user']);
+        msg += ':';
+        conf['group'] && (msg += conf['group']);
+    } fi
+    msg += ") stop";
+    Log('info', msg);
+
+    name = Str.capitalize(conf['name']);
+    o = $name;
+    if (!o || !Sys.has(o, 'stop'))
+        return;
+    fi
+    o.stop(proc);
+    Sys.print(name);
+}
+
+Watch(process_start_event, start_event_handler);
+Watch(process_stop_event, stop_event_handler);
+
+#endif
+/*
+ * while (1) {
+ *     process_start_event = ["conf": ['name':"example"]];
+ *     process_stop_event = ["conf": ['name':"example"]];
+ * }
+ */
+
diff --git a/web/index.html b/web/index.html
index d72e3aa..3e77aff 100644
--- a/web/index.html
+++ b/web/index.html
@@ -33,7 +33,7 @@ <h2 style="padding:8px 20px">Start a new task</h2>
           </select><br><br>
           <div id="interval-box">
             <label for="tinterval">Interval:</label>
-            <input type="text" id="tinterval" name="tinterval" onkeyup="this.value=this.value.replace(/[^0-9]/g,'')" placeholder="Optional, default is 3 seconds"/><br><br>
+            <input type="text" id="tinterval" name="tinterval" onkeyup="this.value=this.value.replace(/[^0-9]/g,'')" placeholder="Optional, default is 3000 milliseconds"/> (ms)<br><br>
           </div>
           <div id="cron-box">
             <label for="tcron">Cron:</label>