NOVELTY - The apparatus has an oxygen generation part generating oxygen in a cathode side of an electric power generation part (6) based on catalytic reaction from an oxygen generating agent e.g. hydrogen peroxide. An oxygen supply pipe line (9) supplies generated oxygen to the cathode side in the electric power generation part. An oxygen generating agent tank (8) stores the oxygen generating agent. The oxygen supply pipe line connects the oxygen generating agent tank and the cathode side of the electric power generation part. A catalyst support part (11) supports catalyst in middle of the pipe line.    USE - Apparatus for supplying oxygen to an electric power generation part of a fuel cell i.e. passive-type direct methanol type fuel cell (DMFC), that generates electric power in a small portable type machine e.g. notebook personal computer, camera such as small video camera and miniature camera, and mobile telephone.    ADVANTAGE - The oxygen supply pipe line supplies generated oxygen to the cathode side in the electric power generation part even if the fuel cell is a difficult small-sized fuel cell to take in oxygen and a space is sealed with respect to external air or taking in oxygen from the external air is use in difficult environment, thus directly supplying high concentration oxygen to the fuel cell in the cathode side, maintaining supply of oxygen by accommodating a mobile telephone and a miniature camera to which the fuel cell is applied in space such as pocket or bag, increasing fall of electric power generation amount by oxygen deficiency, and hence preventing invasion of a foreign material from an outer side and reducing size of the apparatus and noise. The valve of the apparatus supplies feed-rate of the oxygen to the electric power generation part, thus adjusting electric power generation amount. The electric power generation amount is increased by moistening the electric power generation part during start-up of the fuel cell, thus reducing size of the apparatus and improving startability by moistening the electric power generation part by water and oxygen without the need for a humidifier. The chemically stable catalyst support part is formed by utilizing manganese dioxide or platinum for the catalyst when manganese dioxide is applied to the catalyst, thus improving versatility and reducing catalyst cost. The fuel tank of the apparatus stores small volume methanol with high reactivity and high energy density for fuel when hydrogen is used as gaseous fuel, thus reducing fuel cost and handling the hydrogen in an easy manner.    DETAILED DESCRIPTION - The oxygen generating agent contains hydrogen peroxide. The catalyst contains manganese dioxide or platinum. The fuel contains methanol.    DESCRIPTION OF DRAWING(S) - The drawing shows a partial sectional view of a passive-type direct methanol type fuel cell (DMFC).    Electric power generation part (6)    Oxygen generating agent tank (8)    Oxygen supply pipe line (9)    Catalyst support part (11)    Valve (13)