The utility model relates to a random load dynamic controller for oil pumping machines, which comprises a controller main circuit composed of a power supply, an isolating chopper, a three-phase intelligence AC integrated circuit, an excess voltage protective circuit, a signal collecting circuit, and a motor of the oil pumping machine, a control circuit composed of a signal processing random load dynamic control circuit, a manual controller and an automatic remote control interface circuit, and a controller box body. The utility model realizes random load dynamic control and reduces the energy consumption which is about 50% of that of the ordinary oil pumping machine to a minimum level. The utility model has good anti-explosion performance and safety. Because the utility model is additionally provided with an automatic remote control interface, the operability of the oil pumping machine is enhanced and the service life is prolonged.