With the development of artificial intelligence, wireless network and cloud computing, service robots have entered a stage of rapid development. China has entered an aging society. As a key technology to alleviate social pressure and promote people"s livelihood technology, service robots have become a hot spot in the development of science and technology. It gives the basic concept, architecture and key technology of service robot based on cloud computing. And it focuses on the realization process of human-computer interaction technology in robot "humanoid", analyzing the support and guarantee of the aged service robot of the future development of the society, policy and technology. Then there is a summary about the obstacle problems restricting the development of the cloud robot and the improving methods.