The invention relates to a glass continuous melting furnace and a melting method. The invention belongs to the technical field of optical glass smelting production equipment. The method mainly solvesthe problems that the local refractive index difference exists in the fluorine-phosphorus glass continuous smelting furnace and the internal stripes of the product are thickened. The device is mainlycharacterized by comprising an oxidation crucible, a homogenizing crucible, a clarification tank, a cooling crucible and a working crucible which are made of a platinum material, a melting crucible ismade of a high-aluminum ceramic material; the oxidation crucible, the homogenizing crucible, the clarification tank and the cooling crucible are respectively provided with a first gas inlet pipe, a second gas inlet pipe, a third gas inlet pipe and a fourth gas inlet pipe, the opening of the first air inlet pipe is arranged below the liquid level of the glass, the openings of the second air inletpipe, the third gas inlet pipe and the fourth air inlet pipe are arranged above the liquid level of the glass; the method comprises the following steps: (1) enabling the melting crucible to be in buttjoint with the oxidation crucible; (2) opening a crucible cover for loading, introducing O2 into the first gas inlet pipe, the second gas inlet pipe, the third gas inlet pipe and the fourth gas inletpipe; (3) melting, homogenizing, clarifying, and then slowly cooling; and (4) performing leakage injection molding. The method is used for continuous smelting production of the fluorine-phosphorus glass, and the internal quality of the product is improved, the yield of the fluorine-phosphorus glass product is improved, and the cost is reduced.