The invention relates to an elastic pulling-assisting pinned coupler. The pinned coupler comprises a pin assembly, a plug shell, a socket shell, an elastic component and a lock catch assembly, the pin assembly is arranged at the lower end of the plug shell, the elastic component comprises a plurality of elastic parts which are distributed in the socket shell and have elasticity and a plurality of ejection blocks arranged at the lower end of the plug shell, the lock catch assembly comprises a plurality of locking parts and a plurality of trigger parts matched with the locking parts, the locking parts are connected with the plug shell and the socket shell, and the trigger parts are arranged at the upper end of the side surface of the socket shell. After the plug is inserted into the socket, the elastic component is compressed by the ejection blocks, the elastic component is fixed by the locking parts, the locking parts are unlocked by pressing the trigger parts, and the plug is ejected out of the socket through the elastic force of the elastic component. The plug and the socket can be quickly plugged only by pressing the trigger parts, and the plug and the socket are quick and convenient to use.