Abstract: Based on the analysis of pump detection data of a field for near 10 years,and on the investigation to the factors influencing the pump efficiency,this paper dissertates harm like elastic deformation,tubing leakage,fatigue failure,wear and so on resulted from free hanging of tubing,presents a simple and convenient tubing anchoring process and construction technology.Field application shows that good effect has been achieved.Oil producing workers should pay more attention to the technology.