The invention discloses a quick coupling. The quick coupling comprises a connection body, sleeves, taper sleeve assemblies, sealing rings and gaskets. The connection body is provided with a cavity in the horizontal axis direction, and the cavity is used for enabling pipelines on the two sides to communicate and be connected in a sleeved mode. The cavity wall of the cavity is provided with protrusions for positioning and stopping orifices of the pipelines. One sealing ring, one gasket and one taper sleeve assembly are sequentially connected to the corresponding pipeline in a sleeving mode and abut against the end face of the corresponding side port of the connection body. The inner wall of each sleeve is provided with a thread section forming a spiral pair with the outer wall of the connection body, and a pressing joint part for being in pressing joint with the corresponding taper sleeve assembly to clamp the corresponding pipeline. The coupling for connecting the pipelines is formed by assembling the standard components, the modular mounting mode is achieved, the difficulty of the mounting technology is reduced, the mounting process is simple and efficient, pipeline connection quality is safe and reliable, and the sealing effect is excellent.