Fast joint

The utility model relates to a fast joint which belongs to a pipeline component. The fast joint comprises two sections of pipe bodies (1, 5), wherein the sections of one end of the pipe bodies are respectively connecting sections which can be connected with the inlet connecting end and the outlet connecting end of a pipeline which needs to be connected, and the sections of the other ends are respectively made into structures which can make the two pipe bodies inserted mutually to form a shape required by a sheathed pair (6) with a sealing component (2). The sheathed and matched position of the pipe end of an outer pipe, which is near to a sheathed state is provided with an axis line which is vertical to a center line of each pipe body, a lock pin hole (3) which is cross with the inner pipe and does not penetrate through the inner wall of the inner pipe, and a lock pin (9) which is arranged in the lock pin hole (3) and is provided with an eccentric limit section (4) and a handle (7); in addition, the distance of the axis line and the center line is larger than a half of the outer diameter of the inner pipe. The fast joint has the advantages of fast connection and separation, reliable work, convenient fabrication, convenient use and easy maintenance.