With the development of power technology and the improvement of frequency conversion speed regulation technology, the intelligent water supply control method with frequency conversion speed regulation as the core has replaced the previous water supply method of multi-pump switching and valve adjustment. During variable frequency speed regulation, the starting current can be limited within the rated current, thus avoiding the impact on the power grid during starting. Due to the smooth start of the pump, the average speed of normal operation is reduced, thereby extending the life of equipment such as pumps and valves. At the same time, it can eliminate the water hammer effect when starting and stopping. With its stable performance, simple operation mode and perfect function, the frequency converter will enable the water supply system to save electricity, water and manpower, and finally achieve the purpose of high-efficiency operation.