A method and a system for selecting Quality of Service (QoS) policy is provided. The method includes: setting QoS policy processing information in a QPH; receiving, by a QoS Manager (QM), a QoS request from a CP, selecting a QPH to provide QoS policy for a traffic stream according to the processing information of each QPH in a home network, and providing QoS policy to the traffic stream according to the QoS policy of the selected QPH. Through the provided method and the system, the problem that only the QoS policy of the QPH specified by the CP or the default QoS policy can be used as the QoS policy of the traffic stream when multiple QPHs exist in the home network is solved.