The invention relates to the field of fuel cell technology, and especially relates to a flat-plate or flat-tube type solid oxide fuel cell stack circuit connection structure. In a battery, an anode connector with double gas guiding surfaces is used for connecting anodes of two cell pieces, cathodes of the two cell pieces are respectively connected to two cathode connectors, in order to form a battery; multiple batteries are separated by insulated panels, connecting parts are used for connecting a first cathode connector and a second cathode connector of each battery to an anode connector of each of adjacent batteries, so that a plurality of batteries are connected in series connection. An embodiment of the flat-tube type solid oxide fuel cell stack circuit connection structure can optimize output voltage and output current of the cell stack.