Abstract: According to the demands of different layers,the solid models shape descriptor,dilation based multiresolutional skeleton (DBMS) graph was generated based on local dilation. Then based on DBMS graph,the matching of mult-i subgraph in the same level was researched and multiresolutional similarity assessment of DBMS graphs was given to complete multiresolutional matching efficiently and accurately.Experiments show that the algorithm has good precision/recall and can give satisfied retrieval results for users of different design stages efficiently.