The invention discloses a formula feed special for Taiwan softshell turtle in an adult stage. Based on nutrient needs and physiological and biochemical needs of Taiwan softshell turtle in adult stage,a precision formula of powdery formula feed for Taiwan softshell turtle in adult stage is determined by: screening major materials such as American white fish meal, full-defatted anchovy meal, pre-gelatinized starch, fermented soybean meal, Saccharomyces cerevisiae culture and San Zao Jiao (a seaweed gel), as well as minor materials such as minerals, monocalcium phosphate, choline chloride, vitamin complex, coated vitamin C, activated lactic acid bacteria, activated carbon and glycerol tributyrate, mixing the different materials and additives according to a certain ratio through nonstop discussion and repeated test. The formula feed is made by mixing the powdery formula feed with water in certain proportion and beating into a bulky formula feed; the produced formula feed has rich nutrition and good attracting property, has good in-water stability and high feed conversion rate, and provides good farming benefit.