The invention discloses an automatic weeding robot and a control method thereof. The rice field weeding control has the effects of promoting the growth of rice and saving fertilizer, and overcomes the problem that the existing weeding devices cannot remove the weeds between the plants. The automatic weeding control robot comprises a marching mechanism, an inter-row weeding mechanism, an inter-plant weeding mechanism, a machine frame and a camera. The marching mechanism comprises a first stepper motor, a motor seat, a first bushing, an axle and marching wheels. The inter-row weeding mechanism comprises a first direct current motor, a gear box, a first drive shaft, a second shaft, a third shaft, a second bushing, an inter-row weeding shaft and an inter-row weeding claw. The inter-plant weeding control mechanism comprises a second direct current motor, a fourth transmission shaft, a first pulley, a bearing box, a swinging central shaft, a second stepper motor, a bearing, a swinging arm, a second pulley, a swinging box, a drive belt, an inter-plant weeding shaft and an inter-plant weeding claw. When in the working process, the automatic weeding control robot can ensure that the rice is not damaged when removing the grasses between the plants.