The invention relates to the technical field of flow control devices, in particular to a non-contact precise stable flow control device comprising a water storage tank. A water outlet pipe is arrangedat the bottom of the water storage tank. In addition, the non-contact precise stable flow control device also includes a water storage tank water supply system and an adjusting device. The water supply system is used for keeping the liquid level in the water storage tank to be at a preset height; and the adjusting device is connected with one water outlet end of the water outlet pipe being a hoseand is used for adjusting the height position of the water outlet of the water outlet pipe. The water supply system includes a water pump, a control device, and a float switch; and the control deviceis in signal connection with the water pump and the float switch and is used for controlling opening or closing of the water pump based on the signal of the float switch. With the provided non-contact precise stable flow control device, problems of frequent blocking, high cost, and great damages on the water pump the in prior art are solved.