The invention provides an intelligent cleaning method for the lake water surface. An intelligent cleaning device for the lake water surface is adopted for intelligent cleaning operation. When fishing operation is performed, fishing chains are installed on a second finishing gear, a fourth finishing gear, a first fishing gear and a third fishing gear correspondingly, and a fishing driving shaft and a fishing driven shaft are sleeved with a left supporting rod and a right supporting rod. One end of the fishing driving shaft is provided with a first control motor and a second control motor, the other end of the fishing driving shaft is provided with a third control motor and a fishing driving motor, so that multiple types of lifting control manners are achieved, and different fishing diving requirements are met. Meanwhile, the drive speed is controlled through control over the output rotation speed of a power drive mechanism, a steering engine is controlled to change the inclination angle of a rudder to change the navigation direction, and a fishing screen plate and relative components are driven by cycle operation of a first fishing drive chain and a second fishing drive chain to perform synchronous circulation, so that floating rubbish is fished and stored in a rubbish containing box.