【正文】 1 Talking about the project claim the prevention and treatment Abstract： In project management, construction claim is a plex business management. Today39。s domestic project contracting market is being more petitive, successful lowcost has bee a regular operation, the operating contractor for the construction of the claim is very important to achieve the goal. The significance of the claim and described the concept for today39。s domestic construction projects in claims management problems were analyzed and the corresponding countermeasures and suggestions of the project and counterclaims both sides claim the contract is an indispensable business ponent. Based on the analysis of the factors that claims the project, discussed the contract on the implementation of the project claim the deal with the principles and specific treatment. Key words: engineering claim prevention deal with 1. The definition and classification of claims Claim the project is the fulfillment of the contract, the contract due to the other party did not fulfill its obligations under the contract and this led to losses, other demands for pensation or the right to pensation. The incidence of claims is a twoway, as long as the contract side of the responsibility and obligation not to achieve contract, or to provide the conditions inconsistent with the contractual status, there are claims that may arise. It is also a kind of a right, under normal circumstances, the claim refers to the contractor in the implementation of the contract process, the reasons for their nonextension of the project, and require owners to increase the cost of pensation for the loss of a claim. The owners belong to the construction unit should bear the responsibility for the cause, and the actual loss to the construction of requests for pensation, known as the anticlaim. The purpose of their claims can be divided into two categories: construction claims and claims costs. Claim Construction Engineering refers to, as a result of nonresponsibility of the contractor causes delay in the construction process for approval of the contract extended period of the claim. Construction units of the purpose of the claim period is usually two: first, removed or have been shirking its responsibility to extend the duration of the contract responsibility, so that they do not pay as much as possible or not to extend the time limit to pay fines。 II is due to 2 extension of the period and The cost of damage caused by the claim. If the project is not the responsibility of delay caused by the construction, and construction units have been approved construction project claim, the construction units can be made as a result of measures taken to speed up and increase the cost of claims. The cost of claims is based on the principle of pensation for actual losses, and its purpose is to require financial pensation. When the reality of the conditions of the contract and inconsistent, leading to increase in contractor expenses in excess of the requirements of the plan39。s cost of the additional pensation expenses, in order to save his mitment should not be economic losses. 2. The cause of the project claim Engineering design arising from claims. As the construction drawings in error or defective, working drawings and the actual construction site in geology, environment, or the difference between the design drawings and specifications does not match the description of expres