Waste automobile engine oil recovery device

The utility model relates to a waste automobile engine oil recovery device, and relates to the technical field of waste automobile resource recovery, the waste automobile engine oil recovery device comprises an oil tank and a gas booster pump, the gas inlet end of the gas booster pump is connected with the oil tank, the gas outlet end of the gas booster pump is connected with an exhaust pipe, and the other end of the exhaust pipe is used for being in sealed connection with an oil injection port of an engine; the other end of the oil tank is connected with a hose, and a funnel is installed at the end of the hose and arranged at an oil outlet of the engine. Gas in the oil tank is sucked through the gas booster pump, so that negative pressure is formed in the oil tank, and engine oil in the funnel is sucked into the oil tank; and meanwhile, the gas booster pump blows air pumped out of the oil tank into the engine from the oil injection port, so that the pressure in the engine is increased, engine oil in the engi