The utility model discloses a long plunger piston injection-production integrated anti-scale pump, which comprises a pump barrel (3), wherein a long plunger piston (2) is arranged inside the pump barrel (3), the long plunger piston (2) is connected with an oil sucker rod (1), the oil sucker rod (1) drives the long piston plug (2) to do reciprocating movement in the pump barrel (3), a gas injection hole (6) is formed in the upper part of the side wall of the pump barrel (3), the outer part of the pump barrel (3) is provided with a bridge pipe (4) for accommodating the pump barrel (3), a gas injection passage (40) is formed between the inner wall of the bridge pipe (4) and the outer wall of the pump barrel (3), and fluid used for gas injection operation enters a stratum from the gas injection passage (40) through the gas injection hole (6). The long plunger piston injection-production integrated anti-scale pump has the advantages that the gas injection and the oil production are integrated, the pump discharge capability is increased, the accumulated scale formation of the pump tube and the plunger piston is avoided, in addition, scales on the surfaces of the pump tube and the plunger piston can be cleared, the intensity of the pump body is enhanced, and the deep well production requirement with the down pump depth reaching 2500m can be met.