Abstract: Thermal crack is one of the main causes of concrete structure cracking. Pipe cooling is a very common and effective measure in temperature control of concrete structures. But in actual construction, there often remain some issues about pipe cooling, such as large temperature difference between cooling water and concrete, large temperature gradient in concrete, sharp rate of concrete cooling, etc. To improve the existing cooling technique, this paper presents a space-time dynamic control method of a real dam construction project and the corresponding FEM simulation results using a heat-flux coupling algorithm, focusing on sensitivity analysis of cooling duration, temperature of cooling water, water discharge, and direction of flow. In comparison with the traditional method, this new cooling method is proved to be superior in calculation of temperature and stress distributions in concrete. Details of the control parameters and procedure of our dynamic-control method are included.