The invention belongs to an energy-saving type submersible progressive cavity pump oil production system used in the petroleum drilling and production industry. The system is characterized in that a submersible motor is arranged above a tubing anchor, and a motor protector, a speed reducer oil tank, a submersible speed reducer, a speed reducer protector, a lower suspension, a suction device, a screw pump, a suspension connecting device, a desilting unloading uniflow device, an oil conveying pipe, a liquid level monitoring device and a remote intelligent monitoring system are sequentially arranged above the submersible motor. The energy-saving type submersible progressive cavity pump oil production system is stable and reliable in work, remarkable in economic benefit, capable of being widely applied to oil wells under various work conditions for oil production, particularly suitable for inclined wells and horizontal wells, and particularly remarkable in offshore oil production.