Partitioning Manufacture Technology (PMT), which can get complex parts by simple processing has been developed to reduce tooling cost or increase machining efficiency. For the piece number is the primary reason influencing the machining efficiency, to reduce it, a combination algorithm is introduced based on the original feature-based partitioning algorithm. It consists of three steps: (1) Input a pieces set orderly. (2) Built a body attribute adjacency graph (BAAG) to describe the relationship of all pieces in the researching partitioning scheme; (3) Combine the vertices in BAAG, whose combination does not influence the visibility, to reduce the pieces number step by step until there is no redundancy partitioning (RP). At the end of paper, the partitioning schemes with and without combination algorithm are compared. From the comparison we can see introduction of combination algorithm can reduce the pieces number observably. It shows that the improved algorithm can fit to industry better then the former.