The invention relates to a method for producing organic selenium ant powder, which belongs to the technical field of biology and aims at providing the method for producing the organic selenium ant powder which can increase the exploitation and utilization force of ant powder and can further enhance the nutritive value and the medicinal value of the ant powder. The invention has the technical key points that inorganic selenium is converted into organic selenium by microorganisms; then, corn flour and wheat bran are added to prepare organic selenium rations, and finally, the organic selenium antpowder with the selenium content of 10-20mu g/g can be obtained by reasonable feeding and biologic conversion. Compared with the ordinary ant powder, the selenium content of the invention is 50-100 times higher than the selenium content of 0.2mu g/g of the ordinary ant powder, thereby the nutritive value and the medicinal value of the ant powder are greatly enhanced and the invention is more widely applied in the fields of foods, health-care products, medicines, medical treatment articles and the like; moreover, the selenium is in an organic state type and is relatively stable and safe. In addition, the technological process of the invention is easy to master and is convenient to operate; the invention has easy purchase of raw materials, low cost and high additional value of a product.