The invention discloses a gas stove furnace core, which comprises a furnace core casing; wherein, a furnace head is arranged on the upper end of the furnace core casing; the furnace head comprises a heat insulation plate arranged on the inner side of the furnace core casing; a separation sheet is arranged on the heat insulation plate; a burner is arranged on the separation sheet; the gas is fullymixed with air and fully combusts through the heat insulation plate separation sheet and the burner; the heat insulation plate is arranged under the burner to prevent the heat generated by the burnerform dissipating through the lower part of the burner; the airflow of the strong gas ejected by the jet pipe is reduced and the gas is evenly sprayed from the burner and stably combusts, which resolves the problem of inadequate combustion of gas and being easy to extinguish the fire by the strong airflow.