The utility model discloses an automatic miniature coal mining system suitable for a model test. The automatic miniature coal mining system comprises a bracket of which the height is adjustable, wherein one end of the bracket is provided with a rotary motor, a stepping motor and a hydraulic leg are arranged on the bracket, the other end of the bracket is provided with a coal mining device, and both the rotary motor and the stepping motor are connected with the coal mining device; and the stepping motor, the rotary motor and the hydraulic leg are respectively connected with an automatic control system. The automatic miniature coal mining system is easy to operate and high in automation degree; and upper and lower gateways are firstly excavated when coal beds are stoped, then an open-off cut is formed, and excavating is carried out outwards from the open-off cut in a hidden manner, thereby truly simulating a coal bed stoping process.