The invention discloses a method for producing a green feed additive by potale for beast and bird healthy cultivation. The method comprises the steps of potale mixing subpackage, medium sterilization, liquid strain making, inoculation fermentation, and drying and crushing. The method adopts chlorine dioxide to sterilize a potale culture medium, and Paecilomyces varioti fungus to ferment the potale. In the additive produced by the method, protein content is improved to 26.8 to 30.5 percent from 17 percent, energy value is improved to 4,250kCal/kg from the previous 2,510kCal/kg, and direct available digestibility is improved to 62 percent from 33 percent. Main compositions contain more than 10 kinds of nucleotide substances, mannite, fungal polysaccharide, superoxide dismutase, amino acid, sterol, alkaloid, VE, VB1, VB2, mineral substances and the like. Animal experiments prove that the additive has wide action and efficacy. The method has the characteristics of wide raw material source, easy production, controllable quality, low cost, wide application and the like, is applicable to large-scale industrial production, and provides a new approach for high-value utilization of wine industrial residue.