Solid oxide electrolytic cell testing device characterized by using electrolytic water of a solid oxide electrolytic cell to produce hydrogen

The present invention mainly aims at providing a solid oxide electrolytic cell testing device. A fuel conveying mechanism of a solid oxide fuel cell testing device is provided with a tubular evaporator serially connected to an external water source, while the tubular evaporator is internally provided with a multilayer porous filling material by which inflow water can be uniformly diffused for heating convenience, thereby to ensure that stable vapor is provided and introduced to a fuel cell along with fuel, so that adverse effects of an impulse voltage to the cell are relieved during the test of hydrogen production using high-temperature electrolytic water, thus making the test results more reliable and achieving the purpose of producing hydrogen using electrolytic water of a solid oxide fuel cell.