This　study　investigated　the　antioxidant　properties　and　their　effects　on　electrical　potential　difference　(EPD)　of　body　surface　along　acupuncture　meridian　of　Cordyceps　militaris　fungus　powder,　sporophore　powder　and　mycelium　powder.　The　DPPH　radical　scavenging　capacity　and　oxygen　radical　scavenging　capacity　(ORAC)　of　three　kinds　of　Cordyceps　militaris　powders　were　determined.　And　forty　healthy　volunteers　were　divided　into　four　groups　equally　according　to　the　random　number　table.　The　control　group　drank　100　mL　distilled　water,　and　the　Cordyceps　militaris　fungus　powder　group,　sporophore　powder　group　and　mycelium　powder　group　drank　100　mL　of　distilled　water　with　10　g　corresponding　powder.　Data　of　the　EPD　between　two　acupoints　in　one　acupuncture　meridian　were　collected　and　recorded.　The　He　acupoint　was　used　as　the　positive　pole,　and　the　Yuan　acupoint　as　the　negative　pole.　The　DPPH　radical　scavenging　capacities　of　Cordyceps　militaris　fungus　powder,　sporophore　powder　and　mycelium　powder　were　(25.97±1.39)μmol/g,　(14.34±1.68)μmol/g　and　(19.56±0.80)　μmol/g.　The　ORAC　values　of　Cordyceps　militaris　fungus　powder,　sporophore　powder　and　mycelium　powder　were　(16.85±1.13)　μmol/g,　(6.21±0.76)　μmol/g　and　(10.39±0.88)　μmol/g.　Cordyceps　militaris　fungus　powder　decreased　the　EPDs　of　lung,　stomach,　spleen,　kidney,　pericardium,　gallbladder　and　liver　meridians,　and　increased　the　EPD　of　small　intestine　meridian.　Cordyceps　militaris　sporophore　powder　decreased　the　EPDs　of　spleen　and　kindey　meridians,　and　increased　the　EPD　of　small　intestine　meridian.　Cordyceps　militaris　mycelium　powder　decreased　the　EPDs　of　kindey　and　large　intestine　meridians,　and　increased　the　EPDs　of　stomach,　pericardium　and　gallbladder　meridians.　The　antioxidant　properties　from　the　high　to　low　were　Cordyceps　militaris　fungus　powder,　mycelium　powder　and　sporophore　powder.　These　three　kinds　of　Cordyceps　militaris　powders　could　specifically　influence　EPDs　of　acupuncture　meridians.　The　results　hope　to　provide　some　references　for　evaluating　the　efficacy　of　different　parts　of　Cordyceps　militaris.　©　2022,　Editorial　Department　of　Journal　of　Food　Science　and　Technology.　All　right　reserved.