Non-screw thread quick-connecting pipe fitting

The invention provides a fast connecting pipeline without a thread, consisting of a pipe head, a connecting pipe, a pipe clamp and a sealing ring; the external side of the pipe head is provided with a sealing concave trough, a positioning platform and a position limit ring; the connecting pipe is sheathed on the connecting end of the pipe head so as to form a matching connection pair; the external side of the connecting pipe is provided with a circumference positioning concave trough; the pipe clamp is formed by connecting a positioning clamping ring and a release clamping ring through two symmetrical connecting belts; the positioning clamping ring is sheathed on the positioning platform of the pipe head and forms a matching and position limiting connection through the position limit platform; the release clamping ring is an ellipse; the internal side of a short shaft is provided with a block button which forms a connection pair by matching with the positioning concave trough at the external circumference of