The invention provides a pumping well deblocking method and a pumping well deblocking device. The pumping well deblocking method comprises the following steps of determining the clamping blockage typeof a well to be deblocked according to the production history and production environment of the well to be deblocked, wherein the clamping blockage type includes sand clamping blockage, wax clampingblockage, cement clamping blockage and casing deformation clamping blockage; if the clamping blockage type of the well to be deblocked is the sand clamping blockage, driving a sucker rod to do reciprocating movement in an extending direction of a shaft in the shaft by a top drive so that the sucker rod impacts and deblock a clamping blockage region of the well to be deblocked during descending; pumping high-pressure fluid into the shaft by a high-pressure pump communicating with the shaft; and deblocking the clamping blockage region of the well to be deblocked through the impact force of the high-pressure fluid and the sucker rod. The pumping well deblocking method and the pumping well deblocking device have the advantage that a pumping well clamped and blocked through silt can be effectively deblocked; the production efficiency of the pumping well is improved; and the production cost is reduced.