Bioelectrode

This bioelectrode is provided with: a base plate having a plurality of through-holes that are separated from each other; a plurality of electrode parts; and a fixing plate attached to a projecting portion of a connection terminal. Each of the electrode parts is provided with a coating layer, an electroconductive connection terminal that penetrates through the coating layer, and an electroconductive gel layer that is electrically connected to the connection terminal and comes into contact with a living body, in which the connection terminal has a projecting portion that projects from the coating layer and the projecting portion penetrates through one of the plurality of through-holes in the base plate. The size of each of the plurality of through-holes in the base plate is such a size that the projecting portion of the connection terminal can be inserted and can pass through each of the through-holes, and is smaller than the size of the fixing plate.