Abstract: In recent years, sucker rod break has become a major factor influencing pumping operation in the Tahe oil field, which seriously affected the normal production of oil well and caused a lot of economic and production losses. Through statistical analysis, the fatigue caused by alternating loads and the deflection of sucker rod are the main reasons for break. Started in 2015, we carried out optimization design, strengthened management, and introduced some new technologies to reduce break frequency, hence saved costs of RMB 1.81 million per year, reduced production loss of 439 tons.