The net will be contaminated by marine animals and plants and other biofouling in the process of deep-water cage culture, which will affect the water exchange in the cages and is not conducive to the growth and survival of cultured fish. In addition, the contamination of biofouling can cause the weight of the net to increase, thus making it easy to damage the culture equipment. The present paper, based on the analysis of domestic and foreign cage cleaning device and research status quo, compared the technical characteristics of mobile underwater cage cleaning device, tide power type cage cleaning device and underwater cleaning robot, and put forward the future development direction of cage cleaning technology and device with the development of big data and other emerging technologies.