The invention relates to machining equipment and a machining method for performing intersecting line cutting through a six-shaft industrial robot, in particular to a machining device and method for performing intersecting line cutting through a six-shaft industrial robot. The machining device comprises an industrial robot system comprising an industrial robot body and a robot control cabinet; the industrial robot body is connected with the robot control cabinet; the signal output end of the robot control cabinet is connected with the signal input end of a cutting executing tool controller; and the control output end of the cutting executing tool controller is connected with a cutting executing tool which is in rigidity connection with the industrial robot body. The machining device is high in precision and reliability, good in stability and expansibility, capable of controlling the industrial robot to achieve one-time continuous cutting of an intersecting line with a groove, and high in practicability.