In food industry, most pigskin gelatin was used as stabilizer and emulsifier to improve food's original form, flavor, etc. Because of its single uses, lower added value limitation in food industry, the antioxidant activity of the petides were evaluated through vitro chemical model, ultrafiltration was applied to the separation of petides. Moreover, the antifatigue function was also studied combined with animal model so as to provide the theoretical basis for the development of antifatigue foods. The main re...