This paper introduces the cooling water pipe techniques widely used in concrete dams to the temperature controlling methods of lock structures.The study intends to find the temperature cooling effect of cooling water pipes,by laying metal cooling water pipes in one side bottom-board of lock head and making a contrast with corresponding middle bottom-board and side bottom-board which have no such measures.The result proves that cooling water pipes can improve the distribution of temperature field noticeably,and also achieve good results in cutting down the temperature difference in the construction of concrete and decrease the thermal stress very well.