In order to solve the problem that it costs a lot of manpower and material resources to clean the floating garbage in small water areas such as artificial lakes and rivers, a water surface garbage cleaning robot based on the combination of mechanization and automation is designed. The structure of the robot is designed with aluminum plate bracket, double helical roller propeller and dustpan shaped garbage collection net. This paper mainly analyzes the integrated design, calculation and check of the robot. The test results show that robot can flexibly and accurately navigate on the water surface, and control the robot through human-computer interaction to clean up the garbage on the water surface.