Abstract: A new concept,incompletion distributed complete compliant mechanism,was proposed.The compliance of incompletion distributed complete compliant mechanism,the third complete compliant mechanism,is between those of lumped compliant mechanism and distributed complete compliant mechanisms.In order to classify the complete compliant mechanism,a new concept,character dimension ratio,was also given.According the characteristic of the third complete compliant mechanism,the deflection of link was taken into account when complete compliant mechanism was analyzed with pseudo-rigid-body model.Finally,the calculation of an example was given and the result indicates that the method is validity.