Abstract: This article tho roughly analyzed the effect factor of cementation quality of the second interface of cement sheath, and pointed out it is a system engineering about the improvement of cementing quality.It introduces swirl cementing technology and the application of the technology in Zhoucheng field in the north of Jiangsu. The actual application shows that this technology resolved many problems which the present technology can not resolve, such as wall mud cake elimination and low efficiency of slurry substitution in the anomalous ellipse or calabash well hole. It can obviously improve the second interface cementation quality of cement sheath.