Aiming at the problem that the concrete in the corridor of ship lock is easy to crack when concreting in lifts is adopted，based on the given concrete thermal parameters and boundary conditions，the simulation software Midas FEA is used to simulate the distribution of the internal temperature field of the concrete in the corridor under different concreting in lifts and water-through cooling conditions. Combined with corridor size and external constraints，the risk of concrete cracking under different concreting in lifts and different spacing between cooling pipes is evaluated. The results show that the concrete cracking risk is high when the bottom plate，side wall and roof are poured separately，and the concrete cracking risk can be greatly reduced when the bottom plate and upper side wall，top plate and lower side wall are poured as a whole. Cooling water does not significantly reduce the cracking risk of concrete under external constraint stress. On the premise that the concrete temperature field meets the temperature control requirements，it is recommended to cancel the measure of cooling water.