Provided is a fuel cell including a container having at least two openings, a power generating unit contained in the container, the power generating unit having a membrane electrode assembly, an anode and a cathode channel plates, and a fan to supply oxygen into the membrane electrode assembly from one of the openings of the container. The cathode channel plate has a clearance against the container, and the cathode channel plate has the openings communicating with a space formed between the fan and the membrane electrode assembly on the face different from the opposite face, and the clearance.