The invention relates to a mobile self-adjusting screw rod air compressor oil lubricating device, and aims to effectively solve the problems that equipment is not sufficiently lubricated, the working efficiency is low and the equipment is short in service life. According to the structure, a pressure device is mounted in the center of the upper part of a mobile pressing plate at the upper part of an oil storage cylinder through a vertical gas guide tube, the lower bottom of the oil storage cylinder is mounted on a plunger pump, the plunger pump is connected with a variable frequency motor through a speed reducer, the variable frequency motor is mounted on a platform disc at the upper part of a mobile device, a program controller is mounted above the variable frequency motor, an electromagnetic switch which is connected with the program controller is mounted on the vertical gas guide tube at the lower part of the pressure device, a magnet is mounted on a vertical side wall at the lower part of the oil storage cylinder, hydraulic jacking rods are symmetrically mounted on two sides of the lower part of the platform disc on a trolley and are communicated with a pressure release switch which is mounted on the handle of the mobile device through hydraulic pipelines. The mobile self-adjusting screw rod air compressor oil lubricating device is convenient to mount and use and easy to operate, a plurality of screw rod type air compressors can be centrally lubricated, the production cost can be lowered, and no environment pollution can be caused.