Polar plate and fuel cell performance testing device with same

The invention provides a polar plate and a fuel cell performance testing device with the polar plate, the polar plate is provided with a first side surface and a second side surface which are oppositely arranged, the first side surface is provided with a flow channel structure, and the flow channel structure is arranged corresponding to a proton membrane of a membrane electrode; the polar plate comprises an insulating body part; the insulating positioning part is detachably arranged on one side of the insulating body part, a plurality of positioning holes are formed in the side, away from the insulating body part, of the insulating positioning part, a spacing part is arranged between every two adjacent positioning holes, and a runner structure is arranged on the side, away from the insulating body part, of each spacing part; and the number of the filling parts is multiple, one filling part is embedded in each positioning hole, a second flow channel structure is arranged on the side, away from the insulating b