It has been several years since the promulgation and implementation of the general contract for construction projects(model text).As a non-mandatory text recommended for use,the model text is used by the parties to the contract according to the situation of different construction projects.Through negotiation and consultation between the two sides,it provides guidance for standardizing and fairly signing the general contract of the project.There are also many problems in the process of signing and implementing the general contract of the project.Among them,there are some problems in the contract terms of the relevant cost,such as the content of the contract is not rigorous,the expression of intention is not clear,and the content of the terms is not clear.There are many problems such as loopholes in the shield and contract agreement,which cause disputes and disputes in the performance of the contract and difficulties in the performance of the contract.lt seriously affects the determination of project cost.This paper studies and analyzes some of the problems that affect the project cost in the process of signing and implementing contracts.Points out what should be paid attention to when signing a contract.Through the rigorous description of the terms of the contract and the accurate expression of the meaning of both contracting parties,a flawless general contract is signed.lt can effectively reduce contract disputes over general contracting projects,avoid legal risks,and effectively protect the interests of both contracting parties.Fulfill the contract smoothly,finally determine the project cost,and maximize the advantages of the general contracting mode.