Research conclusions：The merits of general design and construction contract for subway construction are as follows: to reduce changes in the design and the construction, save the construction cost, shorten the construction time, be easy to link the design with construction and be helpful for optimizing the design. But there is still room for improvement. For examples, the relative laws and regulations should be revised and improved. The management risk and preventive measures should be studied. How does the government control match its management? How are the relative regulations adaptive to the Bidding Law? And the sample contractor should be studied and worked out.