The invention discloses a nonferrous metal smelting furnace kiln. The nonferrous metal smelting furnace kiln comprises a main hearth (1). Furnace doors (2) are manufactured on the front face of the main hearth (1). An auxiliary hearth (4) is manufactured on the side face of the main hearth (1). The bottom inside the main hearth (1) and the bottom inside the auxiliary hearth (4) are provided with a hearth hole (3). An inner cavity of the main hearth (1) and an inner cavity of the auxiliary hearth (4) communicate with each other through the hearth hole (3). Impurities can be gathered into the auxiliary hearth (4) through stirring of a nonferrous metallic solution via the furnace doors (2) or flowing of the nonferrous metallic solution, and then the impurities are easily removed; and in this way, the content of the impurities can be reduced, and a high-quality regenerated nonferrous metal is obtained.