Ultra wideband (UWB) is a prospective radio technology for wireless ad-hoc networks. In this paper we propose the Quality of Service (QoS) routing for pulse based UWB ad-hoc network. The performance of TH-UWB on the AWGN channel is studied. The PPM scheme with data rate of 110 Mbps is considered. As the simulation results, the information sent by single-hop transmission has error more than that sent by multihop communication. For the data transmission, TCP is useful for this system. The notion of QoS is a quarantee by network to the best satisfy.