The invention discloses an operation robot system for performing laser resection and refrigeration on tumor tissues. The operation robot system comprises a computer system, a cryogenic system and an operation robot system, wherein an operation mechanical arm of the operation robot system is controlled by a computer mainframe to move freely; a cryogenic transmission tube of the cryogenic generator, laser fibers of a laser and a tail end image detector electrically connected with the computer mainframe extend into multiple arm sections sequentially and respectively to reach the tail end of the operation mechanical arm; cryogenic fluid is communicated with the cryogenic generator by virtue of a cryogenic solenoid valve; the tail end image detector is used for receiving relevant images and transmitting the relevant images to the computer mainframe by virtue of a data transmission line, and simultaneously, the relevant images are displayed on a display screen; the computer mainframe controls an operation robot mainframe and orders the movement, refrigeration and resection work in different directions of the operation mechanical arm; and as a doctor controls the mechanical arm to implement a whole operation in a non contact way, the tumor tissues are subjected to refrigeration and resection simultaneously, and the whole process is visualized, the precision and digitalization of the tumor resection are ensured, the risk of tumor spread is low, and the mechanical trauma is small.