The invention discloses a restaurant service robot system, which comprises a control module, a travel module, an interaction module, a perception module, and an execution module, wherein the control module is in communication connection with the travel module, the interaction module, the perception module and the execution module respectively; the control module is used for analyzing and processing received information, perception information and information produced by the system, and controlling the execution module; the travel module is used for a robot body to move; the interaction moduleis used for providing an interaction platform; the perception module is used for perceiving external things; and the execution module is used for executing the operation according to a control instruction. The robot system adopts a mode that the execution module executes the operation according to the control instruction which is sent after the control module analyzes and processes the received information, the perception information and the information produced by the system, so the robot system can well finish the repeated, heavy and tedious work of catering industry, and achieve the aims of automation, intelligentization, employee reduction and convenient management of restaurant service.