The invention discloses a needle cylinder injector recovery device, which comprises a recycling bin, a containing cavity is formed in the recycling bin, a box cover capable of sealing the containing cavity is rotationally mounted on the upper side of the containing cavity; a magnetic attraction block magnetically attracted with the box cover is fixedly arranged on the left side of the containing cavity; a crushing device is arranged in the box cover; the crushing device comprises crushing cutters which rotate in opposite directions; an injector is placed in the containing cavity; a needle cylinder is damaged through the rotation of the crushing cutter; a needle head of the injector is separated from the needle cylinder through a separation device; then the needle head is damaged through abending device; the needle head cannot be recovered through a first recovery cavity, crushing damage of the needle cylinder by the crushing device, and the needle cylinder is recovered by a second recovery cavity, the needle head and the needle cylinder cannot be recovered, repeated use is avoided, classified collection is achieved, later recovery treatment is facilitated, and the process is full-automatic in treatment, the operation is easy and convenient, and efficient, and capable of saving treatment time after use and high in working efficiency.