The invention discloses a flue gas oxidation garbage pyrolysis device with a feeding function. The flue gas oxidation garbage pyrolysis device comprises a bottom plate, a machine shell, a third stop valve, a waste gas discharging pipe and a conveying motor, the inner space of the machine shell comprises a garbage pyrolysis chamber, a transmission chamber, a slag discharging chamber and a flue gas oxidation chamber, and a slag discharging plate is arranged between the garbage pyrolysis chamber and the slag discharging chamber; and slag discharging holes are formed in the slag discharging plate at intervals, material inserting rods are arranged above the slag discharging plate at intervals, the ends, penetrating through the machine shell, of the material inserting rods are connected with a connecting support through a contraction assembly, a guide cylinder assembly, a transmission connecting rod and a drawing and inserting motor are arranged on the side portion of the connecting support, the flue gas oxidation chamber is formed by isolating a flue gas oxidation shell from the slag discharging plate, and fan blades, a fuel nozzle and an oxygen supply pipe are arranged in the flue gas oxidation chamber. According to the flue gas oxidation garbage pyrolysis device, flue gas generated in the garbage pyrolysis treatment process can be subjected to secondary oxidation operation, waste residues formed after garbage pyrolysis can be subjected to drawing, inserting and scattering operation, and automatic feeding operation can be achieved.