In order to analyze the reinforcement effect of freezing method in shield tunnel construction,the steady temperature field around a single freezing pipe is analyzed based on the shield tunneling project of Dadongmen Station of Hefei Rail Transit Line 2 and a three-dimensional numerical model is established according to the actual situation of the project. The results show that the temperature field in the freezing curtain develops circularly around the freezing holes and diverges around them after the intersection of the holes occurs. And the freezing method has a better reinforcement effect that the ground settlement of tunneling construction can be significantly reduced with a maximum 50% reduction. Besides,the left tunnel has larger segment stress after the construction of the right tunnel,so the lining should be put into effect in time and the supporting system should be closed timely to ensure the safe and smooth construction.