A control device for a robot to tease a pet, comprising: a primary sensor, configured to continuously collect a preset number of frames of pet motion images in each motion cycle and transmit them to a unit named state recognizer in turn; the state recognizer, configured to judge the matching between the pet motion images continuously collected by the primary sensor and a pre-stored digital image of pet behavior, and then parse the matched digital image of pet behavior into behavior state parameters of a pet and transmit the behavior state parameters to a unit named behavior interferometer; the behavior interferometer, configured to adjust the behavior state parameters that control the state of the pet according to an additional road sign condition of the home environment where the pet is and according to a historical behavior state of the pet, so as to avoid additional road signs of the home environment, and transmit the adjusted behavior state parameters to a laser projector; the laser projector, configured to move a laser beam to form a structural light spot, so that a motion state of the pet changes towards the motion state corresponding to the adjusted behavior state parameters in the process of following the structural light spot, and then the adjusted behavior state parameters are collected and processed in real time by the primary sensor, and the adjusted motion state is recorded as the historical behavior state; the control device for a robot to tease a pet further comprises a secondary sensor, configured to assist the primary sensor to identify the current motion state of the pet; wherein the secondary sensor comprises an infrared camera, configured to sense an additional road sign image corresponding to the home environment where the pet is and transmit the additional road sign image to the behavior interferometer, which is defined in the behavior interferometer as the additional road sign condition of the home environment where the pet is. a primary sensor, configured to continuously collect a preset number of frames of pet motion images in each motion cycle and transmit them to a unit named state recognizer in turn; the state recognizer, configured to judge the matching between the pet motion images continuously collected by the primary sensor and a pre-stored digital image of pet behavior, and then parse the matched digital image of pet behavior into behavior state parameters of a pet and transmit the behavior state parameters to a unit named behavior interferometer; the behavior interferometer, configured to adjust the behavior state parameters that control the state of the pet according to an additional road sign condition of the home environment where the pet is and according to a historical behavior state of the pet, so as to avoid additional road signs of the home environment, and transmit the adjusted behavior state parameters to a laser projector; the laser projector, configured to move a laser beam to form a structural light spot, so that a motion state of the pet changes towards the motion state corresponding to the adjusted behavior state parameters in the process of following the structural light spot, and then the adjusted behavior state parameters are collected and processed in real time by the primary sensor, and the adjusted motion state is recorded as the historical behavior state; the control device for a robot to tease a pet further comprises a secondary sensor, configured to assist the primary sensor to identify the current motion state of the pet; wherein the secondary sensor comprises an infrared camera, configured to sense an additional road sign image corresponding to the home environment where the pet is and transmit the additional road sign image to the behavior interferometer, which is defined in the behavior interferometer as the additional road sign condition of the home environment where the pet is.