The invention discloses a sleeve conveying detection mechanism, which is used for detecting the displacement of a sleeve and comprises a fixing base, a rotating wheel assembly, an inductor assembly and a controller, wherein the rotating wheel assembly is rotatably connected on the fixing base, and the outer side wall of the rotating wheel assembly is used for abutting against the outer side wall of the sleeve so as to generate rotation along the rotating center axis of the rotating wheel assembly along with the displacement of the sleeve; the inductor assembly comprises a plurality of rotatingmembers which synchronously rotate with the rotating wheel assembly and an inductor, the plurality of rotating members are arranged along the rotating path of the rotating wheel assembly, the initialdisplacement point of each rotating member can correspond to the displacement initial position of the sleeve, the inductor comprises an induction field located on the rotating path of the rotating member, and the inductor generates a detection signal when the rotating member moves in the induction field; and the controller is used for receiving the detection signal generated by the sensor, comparing the detection signal with preset displacement information and sending a prompt signal according to the comparison result. The displacement of the sleeve can be detected each time, and a prompt signal can be sent out in time.