Automatic batching device for biological organic fertilizer

An automatic batching device for biological organic fertilizer comprises a support, a stock bin arranged on the support and a weighing device, a material receiving and stirring barrel is arranged below the weighing device, a material crushing device is arranged between the stock bin and the weighing device, and the material crushing device comprises a driving motor, a rotary drum and a material crushing structure arranged in the rotary drum. A material loosening support is arranged in the stock bin, the lower end of a supporting column of the material loosening support is connected with the top end of an axial supporting column through a splicing outer sleeve, the lower end face of the supporting column is provided with an annular groove with the depth gradually changing, and the upper end face of the axial supporting column is provided with two or more arc-shaped supporting plates corresponding to the annular groove. According to the batching device, the material crushing structure is arranged between the st