Abstract: Sucker rod pump with Jet device is a new type pump combining organically the conventional sucker rod pump with the special Jet pump. Applying the boost theory of jet flow,it may increase pump efficiency. Energy for Jet device to work comes from self feedback of swabbed fluid. Therefore, it need not attach other power system,is a new type pump for later period oil field development. In field applications of 102 wells in 24 oil production departments of 6 oil fields such as Huabei, Liaohe,Shengli,Dagang, Jidong and Zhongyuan oil fields, average pump efficiency increases by 23.3%, average polished rod load decreases by 13.5%,the saved electricity is 38 thousand kw. h,and the obtained economic benefit is RMB 31 540 thousand yuan.