Abstract: To provide end-to-end QoS provisioning in heterogeneous wireless networks and meet the requirements of existing and future network applications, is a challenge in next generation networks. QoS mapping is an effective technology to resolve the problem. In this paper, a QoS Mapping Technology based on Flow Aggregate (QMT-FA) is proposed to assure end-to-end QoS for multimedia services over heterogeneous wireless networks. The proposed method establishes virtual Flow Processing Plan (FPP) above physical network, and allows QoS class mapping in intermediate networks to be transparent over FPP. Then a Mapping Evaluator (ME) entity sitting at a gateway/router determines appropriate QoS mapping to the new network at the network edge. Through mapping services into multidimensional space and designing normal data structure, the method shields the effect of intermediate network QoS mapping, assures the end-to-end QoS of multimedia services in heterogeneous wireless networks, resolves scalability problem, and reduces management complexity and implementational difficulty. Numerical and simulation results are given to demonstrate the effectiveness of the proposed method.