Simple and easy oiling device of hydraulic pressure mechanism for the low problem of work efficiency when oil is mended to hydraulic pressure mechanism to the solution. The handrail that is equipped with the walking wheel and promotes the automobile body walking on the automobile body is equipped with the baffle in the automobile body inner chamber, slidable mounting has the lift assembly on the baffle, is equipped with the translation assembly of drive lift assembly horizontal slip in the horizontal plane on the automobile body, the lift assembly includes and guide, lead screw, screw nut, bracing piece and platform is equipped with the lead screw between a plurality of guides, is equipped with screw nut at the middle part of lead screw, is fixed with a plurality of bracing pieces on screw nut, is fixed with the platform at the top of bracing piece, be equipped with the rotatory assembly of drive screw pivoted on the baffle, be equipped with the fuel feeding assembly on the automobile body, the fuel feeding assembly is inhaled oil pipe and is placed the postbox in including lashing dual -purpose vacuum pump, oil storage bag, going out oil pipe, inhaling oil pipe and trachea. The device can extract in hydraulic oil to the oil storage bag in the oil tank fast to realization oiling operation, work efficiency is high.