Abstract: A heating apparatus using liquefied gas comprises a control valve which controls the gas flow rate by the rotating operation of a flow rate control member and which is rendered open to discharge a gas under flow rate control from the top end of a cylindrical valve body when the body is caused to slide, and a control valve operating mechanism mounted to the control valve which causes the valve body to slide when the mechanism is displaced toward axially, as well as causes the flow rate control member to rotate when the mechanism is rotated circumferentially.