The invention discloses a method of adopting an oxygen-enriched vortex bath smelting furnace to treat secondary copper-containing sundry. The oxygen-enriched vortex bath smelting furnace comprises a furnace body and multiple spray guns, a furnace cavity is arranged in the furnace body which is provided with a feeding port, a smoke outlet, a slag outlet and a discharging port, the furnace cavity has a round cross section, multiple spray gun inserting holes which are distributed along the peripheral direction of the furnace body at intervals, and the spray guns are inserted into the spray gun inserting holes and deviate from the circle center of the round cross section of the furnace cavity along a same direction. The method includes the following steps: feeding the secondary copper-containing sundry into the furnace cavity through the feeding port; adopting the spray guns to spray a fuel medium and a reducing agent into the furnace cavity enable the secondary copper-containing sundry to react in the furnace cavity to generate copper slag, metal copper and smoke; discharging the copper slag from the slag outlet, discharging the metal copper from the discharging port, and discharging the smoke from the smoke outlet. The method has the advantages of low energy consumption and good smelting effect.