The invention relates to a pumping station video identification dirt intelligent cleaning system and an intelligent dirt cleaning method. The intelligent dirt cleaning method includes the following steps: after sewage enters a pumping station, a video monitoring image acquisition module monitors water surface conditions of a water inlet side and sends image signals to a host computer; a dirt sizeidentification module in the host computer intelligently identified the size of dirt; a judgement and analysis module judges and analyzes the size of the dirt and determines whether startup conditionsare met; and when the number or coverage area of the dirt reaches a boundary value, an alarm module sends out an early warning signal. According to the invention, the water surface is monitored through the image signals monitored by the video monitoring image acquisition module in real time. When the number or coverage area of floaters at the water inlet side of the pumping station reaches the boundary value, video signals trigger a set early earning signal, the signal is uploaded to a computer monitoring system, and remote automatic start and stop of a dirt cleaning machine is carried out bya control program, which reduces the input and work intensity of operating personnel and ensures the safe operation of a project.