The invention discloses an intelligent switching system based on power distribution transformers, and the system comprises a first power distribution transformer, a second power distribution transformer, a power supply, and a contact box. The first power distribution transformer is connected with a first intelligent switch, wireless communication equipment, a measurement and control device, a coordinator and an electric appliance. The second power distribution transformer is connected with a second intelligent switch, wireless communication equipment, a measurement and control device, a coordinator and an electric appliance. Each measurement control device comprises a power generation device, a receiving device, a current conversion part, a wireless communication module, a processing unit, a voltage monitoring module, an electronic display screen, an alarm unit, and a server. The system can guarantees the power supply reliability at the electricity consumption peak, and prevents the overload or heavy load operation of a single transformer from causing power failure. The system can effectively reduce the operation efficiency at the electricity consumption valley, and guarantees that the transformer can operate actively.