Abstract: "Compound crown wheel" long-stroke pumping unit is a type of high speed rod pumpingunit,which is designed for a large pump output,(200 m/d3)smaller pump diameter lessthan 70mm rod pump.So that,the annulus test can be conducted in the course of production. In this paper,design criterion presented is based on analyzing the type of some pumpingunits applied in oil field and relations between acceleration and various parameters.A newpumping unit was developed. Its maximum velocity V_m is 44% higher than the recommendation for V_m of pumping units and its maximum acceleration a_m is in a range commonly used byconventional pumping unit.