Abstract:The patent map demonstrates the development direction of enterprises, and it also summarizes the distribution of technology , which is helpful to the enterprise intellectual property management and technological innovation management.This paper analyzes the nine key robot companies in our country .And it draws the patent number of applications over the years, IPC classification chart and so on.Then it analyses the Innovation trend of robot companies in China and gives some suggestions to the service robot company.The Study shows the patent of our national robot enterprises rises in waves. The robot enterprises have immense potential for development. They own the higher patent authorization ratio.However,robot industry enterprises in China accounted for a small amount for the whole robot industry. the research institutes accounted for a large proportion of patents, scientific research and technology haven’t translated into productivity well.