According to the uncertainty and multilevel issues in supportability evaluation index of radar equipment, and on the basis of carding and integrating the elements of supportability evaluation, an index system of supportability evaluation of radar equipment is established; set pair analysis is introduced; and the model and algorithm of supportability evaluation of radar equipment based on set pair analysis attribute hierarchical model (SPA-AHM) are designed. The validity and effectiveness of this method is proved through an example calculation.