A hot water-centered hot water and heating combination boiler comprising: a burner; a cold water inflow tube to which cold water is introduced; a main heat exchanger for heating the cold water introduced through the cold water inflow tube by using combustion heat of the burner; a hot water discharge tube for discharging hot water heated in the main heat exchanger; an auxiliary heat exchanger for heat-exchanging water heated in the main heat exchanger with returning water that is reduced in temperature in a heating consumption place to supply heating water to the heating consumption place in a heating mode; and a control part for controlling combustion of the burner in a hot water mode and the heating mode; wherein the main heat exchanger is constituted by a sensible heat heat-exchanger that absorbs combustion sensible heat of the burner and a latent heat heat-exchanger (122-1,123-1) that absorbs latent heat of vapor contained in combustion gas that is heat-exchanged in the sensible heat heat-exchanger, and the hot-water centered hot water and heating combination boiler being arranged such that the water introduced through the cold water inflow tube successively passes through the latent heat heat-exchanger (122-1,123-1) and the sensible heat heat-exchanger and then is discharged to the hot water discharge tube; characterized in that the latent heat heat-exchanger (122-1,123-1) is constituted by a hot water latent heat heat-exchanger having one side that is connected to the cold water inflow tube and the other end that is connected to the sensible heat heat-exchanger and a heating latent heat heat-exchanger having one side that is connected to a returning water tube (176-1,176-2) to which the returning water is introduced and the other side that is connected to a heating-side heat exchange part inlet of the auxiliary heat exchanger, and the hot water-centered hot water and heating combination boiler being further arranged such that the combustion gas generated from the burner is heat-exchanged while successively passing through the sensible heat heat-exchanger, the hot water latent heat heat-exchanger, and the heating latent heat heat-exchanger. a burner; a cold water inflow tube to which cold water is introduced; a main heat exchanger for heating the cold water introduced through the cold water inflow tube by using combustion heat of the burner; a hot water discharge tube for discharging hot water heated in the main heat exchanger; an auxiliary heat exchanger for heat-exchanging water heated in the main heat exchanger with returning water that is reduced in temperature in a heating consumption place to supply heating water to the heating consumption place in a heating mode; and a control part for controlling combustion of the burner in a hot water mode and the heating mode; wherein the main heat exchanger is constituted by a sensible heat heat-exchanger that absorbs combustion sensible heat of the burner and a latent heat heat-exchanger (122-1,123-1) that absorbs latent heat of vapor contained in combustion gas that is heat-exchanged in the sensible heat heat-exchanger, and the hot water-centered hot water and heating combination boiler being further arranged such that the combustion gas generated from the burner is heat-exchanged while successively passing through the sensible heat heat-exchanger, the hot water latent heat heat-exchanger, and the heating latent heat heat-exchanger.