Abstract: Based on framework of Wireless Multi-Protocol Label Switching protocol and characteristic of Mobile Ad hoc Network, we propose a kind of QoS routing protocol-AMPLS(Ad-hoc MPLS) for MANET using extended CR-LDP signaling protocol to establish Label Switched Path. Then, we build a MANET networking simulation model with AMPLS protocol, analyse the performance of AMPLS protocol, validate its effectivity regarding differentiated services and traffic engineering networking features, and provides one kind of method for mobile ad hoc networking with QoS guarantee to some degree.