Being related to a kind of fuel cell, and structure of voltaic pile, the invention solves issues of that volume of current fuel cell body can't be contracted further; it is cockamamie to distribute surface flow fields equally, and low space use ratio exists. Multiple electrode zones are setup on positive and negative faces of basal plate of fuel cell. On metal flow field plate is inlaid on each electrode zone. Four pieces of flow field plate on positive and negative faces of basal plate constitute a unit of array. Through branch runners on surface, four pieces of flow field plate in a unit of array are connected. Comparing with electrode in single face of former tabulate fuel cell, the evensided structure utilizes more space. When fuel cell operates at self breathe mode, cathodes of contacting air can be arranged on two sides of doublefaced anode so as to raise volume efficiency greatly.