A pixel drive device that drives a pixel array including a plurality of pixels (11 (i, j)) connected to a plurality of input/output terminals (D(i)), the pixel drive device comprising: a connection unit (361, 461) that includes a plurality of connection terminals (P161, P261) whose number is fewer than a number of the input/output terminals; and a connection switching unit that switches connection between the each connection terminal and the each input/output terminal, wherein the plurality of input/output terminals are divided into a plurality of blocks adjoining each other, each including a predetermined number of input/output terminals, the predetermined number is equal to or smaller than a number of the connection terminals, and characterized in that the connection switching unit switches connection between the connection terminals and the input/output terminals in a manner that the connection terminals and the input/output terminals of each of the blocks are connected sequentially, while setting a connection order, in which the input/output terminals of each block are connected to the connection terminals, such that adjoining two of the input/output terminals that belong to adjoining two of the blocks are connected to the same one of the plurality of connection terminals, wherein the connection unit includes either of: i) a plurality of current sources configured to output currents having constant current values for measurement, each output terminal of the current sources being connected to one respective of the connection terminals, and a plurality of voltmeters configured to measure voltage values of the connection terminals, each input terminal of the voltmeters being connected to the one respective of the connection terminals; or ii) a plurality of voltage sources corresponding to the plurality of connection terminals, wherein the voltage sources output voltage having constant voltage values for measurement, and a plurality of ammeters configured to measure current supplied from the connection terminals to the input/output terminals, each one terminal of the ammeters being connected to one respective of the connection terminals and each another terminal of the ammeters being connected to one respective output terminal of the voltage sources. i) a plurality of current sources configured to output currents having constant current values for measurement, each output terminal of the current sources being connected to one respective of the connection terminals, and a plurality of voltmeters configured to measure voltage values of the connection terminals, each input terminal of the voltmeters being connected to the one respective of the connection terminals; or ii) a plurality of voltage sources corresponding to the plurality of connection terminals, wherein the voltage sources output voltage having constant voltage values for measurement, and a plurality of ammeters configured to measure current supplied from the connection terminals to the input/output terminals, each one terminal of the ammeters being connected to one respective of the connection terminals and each another terminal of the ammeters being connected to one respective output terminal of the voltage sources.