A　three-dimensional,　two-phase,　multiple-component,　unsteady　model　for　the　anode　side　of　passive　direct　methanol　fuel　cells　is　presented　in　this　work.　The　model　is　formed　by　a　drift-flux　model　and　can　capture　in-plane　distributions　of　species　along　different　directions　in　the　cell.　After　grid　independency　test,　this　model　is　used　to　investigate　numerically　transport　behaviors　in　the　anode　of　liquid　feed　direct　methanol　fuel　cells.　The　results　illustrate　the　feasibility　of　the　passively　delivering　methanol　to　the　electrochemical　reaction　site,　and　characterize　the　relevant　transport　phenomena.　Moreover,　the　evolution　of　species　concentration,　velocities　along　different　directions　in　the　cell　and　the　mass　transfer　limitation　were　also　presented.　The　three-dimensional　model　is　valuable　for　understanding　and　predicting　mass　transfer　in　passive　direct　methanol　fuel　cells.