This invention discloses a heat control device of a portable gas stove, comprising a hollow cylindrical button base and a switch button, an installing slot protruded from the top of the inner wall of the button base, a spring disposed in the installing slot, and a pressing member with its rear end being installed in a limit notch at the open end of the button base for mutual engagement. The pressing member is completely latched into the limit notch to ensure a complete shutdown of the gas supply.
