In order to improve the durability of frost resistance of hydraulic concrete under climate change conditions, a climate simulation system made by the authors was employed to study the effects of freeze-thaw temperatures on the weight loss and dynamic elastic modulus of hydraulic concrete with the three designed antifreeze levels F50, F100, and F300. During the test, the freeze-thaw processes were observed with set five center temperatures of concrete samples:-5℃, -10℃, -17℃,-30℃, and -40℃. The results show that, with decreasing center temperatures of samples in the freeze-thaw processes, the weight loss and dynamic elastic modulus loss of the three designed antifreeze levels gradually increase, while the maximum withstanding numbers of freeze-thaw cycles gradually decrease. That is to say that lowering the center temperatures of concrete samples in freeze-thaw processes will decrease the durability of frost resistance of hydraulic concrete.