Serial connection process of hydraulic system of remote control valve and serial connection tool

The invention discloses a serial connection process of a hydraulic system of a remote control valve. The process comprises the steps of connecting end parts of all hydraulic remote control pipes connected with a valve box in the hydraulic system of the remote control valve with ferrule joints; then sequentially connecting a temporary hose connected with a nitrogen bottle air outlet pipe with the ferrule joints at the end parts of the hydraulic remote control pipes, opening an opening and closing valve on the nitrogen bottle air outlet pipe after connection, and blowing through each pipeline byusing nitrogen until a white cloth of a return pipe at a valve control box is clean; and directly recovering the pipelines of the hydraulic system of the remote control valve through the ferrule joints. According to the process, secondary pollution caused by a serial connection tool and an later pipe connection after serial connecting is eliminated, the correspondence between a remote control pipe and the remote control