In order to research anti-oxidative capacity， thermal stability of Cordyceps militaris and its channel tropism， SOD activity and total antioxidant capacity of Cordyceps militaris were studied. 20 subjects were recruited and randomized into 1 of 2 groups. They had Cordyceps militaris （1 g） or enhanced SOD Cordyceps militaris （Cordyceps militaris 1 g and SOD 1 g） each day during 14 days. The change of electric potential difference of kidney， lung， spleen and liver meridians were analyzed. The results showed that： Cordyceps militaris has strong anti-oxidative capacity and thermal stability； Cordyceps militaris and enhanced SOD Cordyceps militaris decreased the electric potential difference of kidney meridian， which conformed to the reported effects of Cordyceps militaris.