The invention discloses a hydraulic jumper and testing and installing methods thereof. The hydraulic jumper comprises an umbilical cable, and each of two ends of the umbilical cable is connected with a female joint terminal. The female joint terminal comprises a female joint installation plate, and a guide element, a locking device and a female joint are installed on the female joint installation plate. Two ends of a hydraulic pipeline arranged in the umbilical cable are respectively connected with adaptors of the female joints of the two female joint terminals. The testing and installing methods of the hydraulic jumper include jointing the two female joint terminals with male joint terminals and performing flushing test; moving the hydraulic jumper into water, installing the two female joint terminals to the male joint terminals, fixedly installed, of underwater equipment through a ROV (remote-operated vehicle). With the hydraulic jumper, quick connection and separation of the underwater equipment can be achieved, anti-crushing sealing for connection and separation in full pressure can be realized, all key parts and movable parts can be recycled, and safety and reliability in docking and connection stages of the ROV are guaranteed.