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The leftover materials of NiTi shape memory alloy were remelted via vacuum induction melting in a graphite crucible. After rolling, the remelted alloy plates were aged at different temperatures and their room temperature mechanical properties were investigated. Results show that after remelting of the leftover materials of NiTi shape memory alloys, their yield strength and tensile strength are increased to different extents, while the elongation is only increased a little. The shape recovery rate by stress-induced martensite transformation is decreased. At the same time, the ability of plastic deformation becomes poorer with the aging temperature increasing. On the whole, the elongation provided by reorientaion of R phase is longer than that of another NiTi shape memory alloy melted from electrolytic nickel and sponge titanium