The present invention is a device for detecting the position of a body of a body tube, comprising at least: a hollow tube body having an inlet end and an outlet end； and a sounding unit capable of generating a first sound wave at the inlet end An inductor is capable of receiving a second sound wave； a processing device is coupled to the sensor signal and coupled to the sounding unit signal. The present invention transmits the first sound wave to the hollow tube through the sounding unit, and after receiving the second sound wave through the sensor, it can be determined whether the position of the outlet end of the hollow tube body has moved, so as to quickly Instantly know if there is a change in the location of the exit. Moreover, this creation does not have the risk of damage to the body wall of the human body by the conventional detecting device, thereby reducing discomfort and injury to the human body.本創作係為一種體內管的體內位置之檢測裝置，其至少包含有：一中空管體，係包含有一入口端及一出口端；一發聲單元，係能夠於該入口端產生一第一聲波；一感應器，係能夠接收一第二聲波；一處理裝置，係與該感應器訊號連接及與該發聲單元訊號連接。本創作透過該發聲單元將該第一聲波傳入該中空管體，並透過該感應器接收該第二聲波後，可判別該中空管體的該出口端的位置是否已產生移動，以快速即時的知道該出口端的位置是否有變化。且，本創作不會有傳統檢測裝置的傷害人體體內器官壁面的風險，因而能降低對於人體的不適及傷害。
