The invention discloses a domestic energy-saving heating boiler. The domestic energy-saving heating boiler comprises a boiler base, a boiler body, a boiler cavity, a feeding door, a control panel, a flame adjuster, a marmite supporting table, a smoke outlet hole, a heating cavity, an air blower and a slag cavity. The boiler base is installed at the bottom of the boiler body, the flame adjuster is installed above the boiler cavity, and the control panel is installed above the left surface wall of the boiler body. The domestic energy-saving heating boiler has the advantages that a baffle pull rod is pulled down through a flame-adjuster rotary knob and a baffle adjusting rotary knob which are arranged on the control panel to block the heating cavity, and the size of flames is controlled; meanwhile, when the boiler is not used, the baffle pull rod can be pulled up, energy-saving heating is conducted through residual heat of the boiler, and the use efficiency of heat energy is maximized; the body of the domestic energy-saving heating boiler is of a double-layer structure, safety and stability are achieved, the heat energy generated by combustion of fuel gas is used to the maximum degree, the energy use rate is increased, and the structural design is reasonable.