NOVELTY - The method comprises: adjusting a fuel replenishment amount supplied from a liquid fuel replenishment device utilizing a control unit (108) of a direct methanol fuel cell (DMFC) system (100), where the fuel replenishment amount is a sum of a basic replenishment amount and a replenishment amount for temperature correction, and the basic replenishment amount is a function of actual discharge current of the fuel cell; and measuring a replenishment amount for temperature correction as a function of a difference between the actual temperature of the fuel cell and a target temperature.    USE - The method is useful for controlling a replenishing anode fuel for a DMFC system (claimed).    ADVANTAGE - The method is capable of operating the fuel cell stably.    DETAILED DESCRIPTION - The method comprises: adjusting a fuel replenishment amount supplied from a liquid fuel replenishment device utilizing a control unit (108) of a direct methanol fuel cell (DMFC) system (100), where the fuel replenishment amount is a sum of a basic replenishment amount and a replenishment amount for temperature correction, and the basic replenishment amount is a function of actual discharge current of the fuel cell; and measuring a replenishment amount for temperature correction as a function of a difference between the actual temperature of the fuel cell and a target temperature, where the DMFC system comprises a fuel cell (102), a cathode humidity-holding layer (104) disposed on a cathode side of the fuel cell, a fuel distribution unit (106) disposed on an anode side of the fuel cell, a fuel replenishment device controlled by the control unit to transfer a methanol fuel in a fuel storage region to the fuel distribution unit and further distributing the methanol fuel over the fuel cell, and a temperature detecting device detecting an actual temperature of the fuel cell. The replenishment amount for temperature correction and the difference are in a nonlinear inverse ratio and represented by an nth-degree polynomial function of the difference, where n is greater than 3, where the replenishment amount for temperature correction further comprises a function of a variation slope of the actual temperature. The method further comprises disposing an anode fuel uniform layer between the fuel cell and the fuel distribution unit to distribute the methanol fuel uniformly, presetting an upper limit value and a lower limit value for the replenishment amount for temperature correction, where the fuel distribution unit has an entry for accepting the methanol fuel and two outlets for transferring the methanol fuel to the fuel cell. The cathode humidity-holding layer is made of metals, ceramics or polymers, and a permeability of the cathode humidity-holding layer is determined by a porous opening ratio of the cathode humidity-holding layer, where the porous opening ratio of the cathode humidity-holding layer is 0.5-21%.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic block diagram of a fuel cell system.    DMFC system (100)    Fuel cell (102)    Cathode humidity-holding layer (104)    Fuel distribution unit (106)    Control unit. (108)