Disclosed are a home network device and a proxy service discovery method, related to the field of communications. The method includes: a proxy demand device acquiring related information of proxy service discovery function of proxy devices (101); the proxy demand device negotiating specific parameters of the proxy service discovery with the proxy devices (102); the proxy device performing service discovery operations of the proxy demand device on behalf of the proxy demand device, and maintaining an information exchange with the proxy demand device (103). The present invention further discloses a home network device. The technical solution of the present application prolongs the sleep time of home network devices at the same time of ensuring that service discovery operations of home network devices are performed normally, which greatly reduces the power consumption of these devices, and improves the working efficiency and overall performance of the home network service discovery.