The invention relates to the technical field of tertiary oil recovery of oil fields, and belongs to an anti-scaling trinity oil well pump integrating a scale scraping function, a scale removing function and a scale preventing function into a whole. The problem that pump blocking is caused by the fact that the outer surface of a plunger and the inner surface of a pump barrel are scaled is solved. The anti-scaling trinity oil well pump is composed of a pump barrel (1), an oil outlet joint (2), an upper anti-scaling pup joint (3), an upper scale scraping ring (5), an upper scale inhibiting ring (6), an alloy plunger (8), a movable valve base (9), a movable valve ball (10), a lower anti-scaling pup joint (11), a lower scale inhibiting ring (13), a lower scale scraping ring (14), a fixed valve base (16) and a fixed valve ball (17). The anti-scaling trinity oil well pump is suitable for lifting a water flooding scaling well, a polymer flooding scaling well, a combined chemical flooding scaling well in an oil field and the like and has the advantages of being capable of preventing the condition that the pump detection period of the scaling well is prolonged due to the phenomenon that the pump is blocked by scales to the maximum limit and the like.