Abstract:To establish a method for evaluating and screening excellent strains of Cordyceps militaris with high antioxidant capacity，the extracellular fermentation broth of Cordyceps militaris was used as the research ob?ject.Correlation analysis was used to evaluate the antioxidant capacity of 10 Cordyceps militaris strains and screen excellent strains.Based on correlation analysis and membership function assignment calculation，a lin?ear regression equation was established by using the growth activity，extracellular enzyme activity，and antioxi?dant capacity of the Cordyceps militaris strain as indicators.The targeted screening models of the comprehen?sive antioxidant capacity of the Cordyceps militaris strain were obtained in relation to fermentation biomass，av?erage mycelial growth rate，β?glucosidase activity，and protease activity.The model was used to screen domi?nant strains CH?1 and CA?1.Further verification through solidity experiments showed that the biological con?version rate of CH?1 and CA?1 strains of Cordyceps militaris could reach over 90%，and their cordycepin con?tent was nearly 60% higher than that of wild strains.The growth cycle of the strains was reduced by 10 d.The experimental results showed that this model can be used to quickly screen excellent strains of Cordyceps milita?ris with high antioxidant capacity.