Experimental　study　of　a　liquid　fed　direct　methanol　fuel　cell　has　been　conducted　in　different　gravity　environments.　A　small　single　cell　with　5　cm　x　5　cm　active　area　has　single　serpentine　channel　on　the　graphite　cathode　polar　plate　and　11　parallel　straight　channels　on　the　graphite　anode　flow　bed.　Cell　voltage　and　current　have　been　measured　and　two-phase　flow　in　anode　channels　has　been　in　situ　visually　observed.　The　experimental　results　indicate　that　the　effect　of　gravity　on　power　performance　of　the　direct　methanol　fuel　cell　is　large　when　the　concentration　polarization　governs　fuel　cells　operation.　Gravitational　effect　becomes　larger　at　higher　current　density.　Increasing　methanol　feeding　molarity　is　conducive　to　weaken　the　influence　of　gravity　on　performance　of　liquid　fed　direct　methanol　fuel　cells.　Increasing　feeding　flow　rate　of　methanol　solution　from　6　to　15　ml/min　could　reduce　the　size　of　carbon　dioxide　bubbles,　while　the　influence　of　gravity　still　exist.　Transport　phenomena　inside　direct　methanol　fuel　cells　in　microgravity　is　also　analyzed　and　discussed.