The invention relates to the technical field of fuel gas stoves, in particular to an energy-saving gas stove. The energy-saving gas stove comprises a mainboard, ignition rotary knobs, a gas conveyinghose, a battery box, control mechanisms, a limiting mechanism, a gas inlet mechanism, a protective board and a conductive mechanism. According to the energy-saving gas stove, by arranging the protective board on the surface of an energy-saving stove body, all greasy dirt during cooking is gathered on the protective board, moreover, when the protective board needs to be washed, the protective boardcan be fast detached, cleaning is simple and convenient, and installation and detachment are fast; by installing the control mechanisms on the outer portions of the ignition rotary knobs, the ignition rotary knobs can drive the control mechanisms to rotate when rotating, thus current turn-on and turn off of the conductive mechanism and the gas inlet mechanism are adjusted, finally, through the ignition rotary knobs, not only can ignition of the energy-saving stove be controlled, but also fuel gas supply can be controlled at the same time, a user only needs to operate the ignition rotary knobswhen using or turning off the energy-saving stove, twisting a fuel gas switch is not needed, the safety performance is higher, and the energy saving effect is better.