The invention provides a coaxial birotor general wind generator which comprises a bracket which is arranged on a tower post and can freely rotate around a vertical axis in the tower post, a ram head is arranged above the bracket, and one side of a stander is provided with a wind helm. The ram head consists of a main shaft, an outer casing shaft, two wind wheels, a magnetic steel rotor and a coil rotor, wherein, the outer casing shaft is sheathed at one end of the main shaft, the main shaft and the outer casing shaft are arranged on the bracket through bearings, the wind wheel I is fixed on the main shaft, the wind wheel II is fixed on the outer casing shaft, the magnetic steel rotor is fixedly arranged on the main shaft, and the coil rotor is fixedly arranged on the outer casing shaft. The coaxial birotor general wind generator has high working efficiency, good stability and small occupied area of equipment, and can be placed in courtyards, the tops of buildings or roofs, gazebos and other places; and the generator has the advantages of simple and convenient installation, high feasibility, low cost, simple structure, convenient production and maintenance, and the like.