The invention discloses a flow-adjustable pipe joint. The flow-adjustable pipe joint comprises a pipe joint body, an adjusting joint and a locking nut; the outer walls of the two ends of the pipe joint body are each provided with a connecting outer thread, one end of the pipe joint body is provided with a flowing channel, the other end of the pipe joint body is provided with an inserting hole, and the flowing channel and the inserting hole are connected through a circular conical surface; one end of the adjusting joint is provided with an inner joint, the other end of the adjusting joint is provided with a nut joint, a hexagonal annular boss is arranged on the exterior of the inner joint of the adjusting joint, the inner wall of the hexagonal annular boss is provided with a connecting inner thread, the inner joint is connected with the inserting hole in a matched mode, the adjusting joint is provided with a through hole in the axis direction, a connecting hole is formed in the outer end of the through hole, and the locking nut is connected with the nut joint in a threaded mode. According to the flow-adjustable pipe joint, through matched design of the adjusting joint and the circular conical surface, adjustment of a flowing section is achieved, therefore, the flow adjusting effect is achieved, and the service life of a pipe fitting and a pipeline is prolonged.