The present invention is a cathode flow field board for fuel cell, which comprises a substrate, an inlet channel structure configured on the substrate, at least one slot body, an outlet channel structure, a first hollow area, and a second hollow area; wherein, the inlet channel structure is connected between these slot bodies, and the inlet area of the inlet channel structure is a groove structure, and the area of the inlet channel structure connected to these slot bodies employs a hollow structure. The configured positions for the arrangement of these slot bodies are associated with these configured positions of cathodes for each membrane electrode assembly; the outlet channel structure is connected to these slot bodies; and, the first hollow area and the second hollow area are configured associating with the anode flow field board.