A medical conduit includes a first conduit, a second conduit and a third conduit. The first conduit is bigger than the third conduit in length and built within the third conduit one end of the first conduit penetrates a bore at one end of the third conduit, while the other end of the first conduit penetrates a through-hole on the side wall of the other end of the third conduit and, together with the other end of the third conduit, forms a Y shape the side wall at the other end of the first conduit is provided with a number of through-holes for guiding liquid or gas one end of the second conduit is embedded at the bore at one end of the third conduit. The medical conduit can perform guidance and location in a human body and separately conduct injection and exhaustion to provide accurate measuring data for doctors.
