The special risk factors were analyzed in the dynamic alliance,an identifying framework was presented,and some risks were probed in the article.According to the complexity and fuzziness of(alliance) risk,a linear assignment model of fuzzy multiobjectives manypartners decisionmaking was built up.The example illustrates that the approach can consider the combined analysis of quality and quantity.The method is practical and feasible and a new thought is proffered to the risk analysis and(evaluation) of dynamic alliance.