The construction contract defect means deficiencies and inadequate places in contract,that is,there are some unspecific or indeterminate contractual specifications in the construction contract which contractor can not perform or perform improperly and result in contract troubles.This article comes up with four countermeasures aimed to the faultiness.Such as:revise and improve the construction contract(model text);make it perfect by particular conditions at the moment of signing construction contract;improve the relevant laws,regulations and project management standards;enhance the professional quality of contract management staff.