diff --git a/namespace.go b/namespace.go
index ca902788..e4935ac3 100644
--- a/namespace.go
+++ b/namespace.go
@@ -198,10 +198,12 @@ func (n *Namespace) Namespace(ns ...*Namespace) *Namespace {
 	for _, ni := range ns {
 		for k, v := range ni.handlers.routers {
 			if t, ok := n.handlers.routers[k]; ok {
+				addPrefix(v, ni.prefix)
 				n.handlers.routers[k].AddTree(ni.prefix, v)
 			} else {
 				t = NewTree()
 				t.AddTree(ni.prefix, v)
+				addPrefix(t, ni.prefix)
 				n.handlers.routers[k] = t
 			}
 		}
@@ -225,10 +227,12 @@ func AddNamespace(nl ...*Namespace) {
 	for _, n := range nl {
 		for k, v := range n.handlers.routers {
 			if t, ok := BeeApp.Handlers.routers[k]; ok {
+				addPrefix(v, n.prefix)
 				BeeApp.Handlers.routers[k].AddTree(n.prefix, v)
 			} else {
 				t = NewTree()
 				t.AddTree(n.prefix, v)
+				addPrefix(t, n.prefix)
 				BeeApp.Handlers.routers[k] = t
 			}
 		}
@@ -245,6 +249,20 @@ func AddNamespace(nl ...*Namespace) {
 	}
 }
 
+func addPrefix(t *Tree, prefix string) {
+	for _, v := range t.fixrouters {
+		addPrefix(v, prefix)
+	}
+	if t.wildcard != nil {
+		addPrefix(t.wildcard, prefix)
+	}
+	if t.leaf != nil {
+		if c, ok := t.leaf.runObject.(*controllerInfo); ok {
+			c.pattern = prefix + c.pattern
+		}
+	}
+}
+
 // Namespace Condition
 func NSCond(cond namespaceCond) innnerNamespace {
 	return func(ns *Namespace) {