Abstract: Enterprise knowledge has an important influence on enterprise performance and competence.Measure of partner knowledge can reinforce management of virtual enterprise knowledge and consequently improve performance of virtual enterprise.Aiming at the problem of knowledge measure of virtual enterprise,KP²RP is put forward as a solution.Five elements of KP²RP are illuminated including knowledge,product,process,resource,and performance.In the definition of associated matrix between elements,the level of knowledge measure is given.Finally a measure model based on data envelopment analysis is put forward and the feasibility of KP²RP is proved by analysis of a case．