The utility model relates to a calibration device of a two-dimensional network circuit board for measuring fuel cell electric current density. The two-dimensional network circuit board comprises a multi-channel voltage sensor and a plurality of detection sub areas, an embedded type resistor connected with the multi-channel voltage sensor in parallel is arranged in each detection sub area, the calibration device comprises a device casing and a calibration circuit board in the device casing, the calibration circuit board comprises a power module, a power voltage detection module, a partial pressure module, a control module and spring inserting pins, quantity of the spring inserting pins is same with that of the embedded type resistors, the power module, the partial pressure module, the control module and the spring inserting pins are sequentially connected in series, one ends of embedded type resistors are correspondingly connected with the spring inserting pins, the other ends of the embedded type resistors are connected with the power module of the calibration circuit board through wires, and the power voltage detection module is connected with two ends of the power module. Compared with the prior art, the calibration device has the advantages of high calibration accuracy and the like.