The utility model particularly relates to a mobile cable of transformer substation cover plate plays to rise device, including the frame main part, the top that the front end is close to to the framemain part is provided with vertical expansion bend, and pass the frame main part and uses the point that contacts with the front end of frame main part to set up an atress lever as the fulcrum, the lower extreme and the one end of atress lever of vertical expansion bend are connected, 4 C type pothooks that are used for the centre gripping apron are connected respectively through 4 wire rope to the other end of atress lever, the bottom of frame main part is provided with the wheel, adopt after the universal wheel combines directional wheel, can guarantee the flexibility and the stability of automobile body simultaneously, hoist mechanism places the one end of automobile body in, guarantees after having promoted the cover plate that the automobile body can move to the automobile body otherend, does not worry that the wheel is absorbed in the cable pit of raising, adopt four wire rope, four the C type pothooks of ining succession, block C type pothook to four angles of cover plate respectively, can guarantee the stability of cover plate.