The invention relates to the field of electric automobile cell charging/exchanging power station apparatuses, and concretely relates to a fuel-gas actively-heated cell box of an electric automobile. The cell box comprises a cell box body and a heating apparatus at the bottom of the cell box body; the heating apparatus comprises a gas storage tank, an intake pump, an exhaust pump and an enclosed combustion chamber; the gas storage tank, the exhaust pump and the intake pump are all connected with the combustion chamber respectively via pipelines; the combustion chamber is provided with an ignition plug for ignition and a pressure sensor for monitoring the pressure in the combustion chamber; and a thermal buffer plate is arranged between the cell box body and the combustion chamber. The cell box can be actively heated without using electricity, so that damage to power lithium batteries used in extremely severe environments is avoided; the thermal buffer plate can guarantee safe heating of the cell box, and helps to relatively well solve the problems that an automobile is large in cell resistance when being started and difficult to start when the working environment temperature of the electric-automobile cell is relatively low, the heating manner is environment-friendly, energy-saving, reliable and safe, and the heating apparatus is simple and portable; and the cell box is capable of adapting to extremely-cold severe environments and is good in safety.