Based on the development of Chongqing Jialing River navigation lock Grass Street Navigation and Hydropower Engineering, on the finite element program ANSYS platform, using parametric design language (APDL) commands, we carried out the simulation analysis to the temperature field during layered pouring of concrete for the chamber structure, and obtained the section’s temperature curve and variation law of the lock wall’s temperature field with time. According to these results, we put forward proper construction measures for the control of the mass concrete temperature, which gained a satisfactory effect. It reveals that the finite element model is able to simulate well the pouring temperature field of mass concrete.