The work aims to design a high-efficiency condenser cleaning robot based on contradiction theory and object-field model to solve the problems of low efficiency and high cost of cleaning equipment. Through the TRIZ system component analysis and causal axis problem analysis, the effective and insufficient functions of the condenser cleaning robot were found out. The solutions to the above causes were obtained by TRIZ's technical contradiction theory, physical conflict theory and object-field model. Finally, a multi spray gun collaborative condenser cleaning robot based on hybrid mechanism was innovatively designed and the prototype was manufactured for testing. Compared with the traditional robot, the innovative robot saved 76% maintenance man hours and about 25% cost. The cleaning robot can overcome the existing technology effects, improve the structural stiffness, motion accuracy, flexibility and operation efficiency, and reduce the labor intensity and labor cost.