Lubricating oil preheating equipment for aircraft

The invention discloses aircraft lubricating oil preheating equipment which comprises a lubricating oil circulating power system and a heating system, and before an aircraft engine is started, a station alternating current/direct current power supply facility is used as energy for heating and circulating work; the preheating equipment is connected with a lubricating oil filling port, an oil filling port and a lubricating oil discharging port of aircraft lubricating oil through the oil filling pipe and the oil suction pipe, the lubricating oil circulating power system is used for pumping the lubricating oil in an aircraft engine into the heating system through power-on work of the oil filling pump and the oil suction pump, and after being heated by the heating system, the lubricating oil in the aircraft engine is heated by the heating system. And then the lubricating oil is sent back into the aircraft through the oil filling pipe, so that an on-line circulating direct heating working mode of the lubricating oi