Based on temperature stress testing,we study the temperature variation,volume deformation properties and stress of different mix proportion,and analyze the effect of the amount of cement,cement proportion,slurry ratio on the crack resistance of concrete.Using the temperature difference of fracture,temperature shrinkage coefficient and cracking safety coefficient,we evaluate the crack resistance of concrete and choose the mix proportion with the best anti-cracking performance,which is applied to he construction of immersed tube precasting in Hong Kong-Zhuhai-Macao Bridge project.