The invention discloses an automatic rotation type oil filling valve structure of an oil filling machine. The automatic rotation type oil filling valve structure comprises an installation base provided with a first through hole, a valve head is connected to the lower end face of the first through hole in a screwed manner, a second through hole is formed in the upper end face of the installation base, and a second driving air cylinder and a first driving air cylinder are arranged on the upper end face of the installation base; a movable shaft of the first driving air cylinder is downward, the second driving air cylinder is installed at the tail end of the movable shaft of the first driving air cylinder, and the outer surface of the second driving air cylinder is sleeved with a compression spring; andthe extending-out end of the second driving air cylinder is provided with a center rod with an absorption hole, and after the center rod vertically and downwards penetrates the first through hole, an oil outlet channel with an adjustable gap is formed between a taper piston at the tail end of the center rod and the interior of the valve head. The oil outlet channel between the piston and the valve head is controlled through the first driving air cylinder and the second driving air cylinder, and therefore accurate control is achieved; after the oil outlet channel is closed, oil does not overflow, and oil in the valve head is absorbed into the absorption hole through the second driving air cylinder, the oil in the valve head cannot drop, and the flowing speed can be changed through pressurization.