The invention provides a remaining needle assembly machine which performs streamline operation through a mechanical structure, so that assembly efficiency of the whole remaining needle is high. The remaining needle assembly machine comprises a base, wherein a large station indexing disc and a small station indexing disc are arranged on the base; a metal wedge loading station, a guide tube loadingstation, a guide tube crimping station, a CCD detecting and NG excluding station, a guide tube base loading station, a guide tube base crimping station, a guide tube cutting station and an oiling andfinished product discharge device are sequentially arranged at the outer side ring of the large-station indexing disc; and at least eight groups of carriers are uniformly arranged on the large-stationindexing disc.