The invention discloses a pulsating reciprocating type hydraulic pumping unit, which comprises a balanced type piston pump, a piston rod, a pulsating type piston pump, another pulsating type piston pump, an oil outlet valve, an oil filling valve and piston valve, a gas-liquid separator, a fluid replacement loop and a safe loop. The gas-liquid separator is arranged at the lower end of a pumping unit, the balanced piston pump is arranged at the middle part of the pumping unit, and the pulsating type piston pump is arranged at the upper end of the pumping unit. The pulsating reciprocating type hydraulic pumping unit disclosed by the invention has the characteristics of simple structure, convenience for operation, high efficiency, flexibility and strong applicability.