The invention discloses a stretch-in ladle heat exchange roasting nozzle, which consists of a ladle cover. The middle part of the ladle cover is provided with a central hole, the upper part of the ladle cover is provided with a supporting vertebral body with a central hole, and the diameter of the central hole of the supporting vertebral body is equivalent to that of the central hole of the ladlecover; the supporting vertebral body is provided with an air outlet hole communicated with the atmosphere; the upper part of the supporting vertebral body is provided with a gas distribution ring; the gas distribution ring is communicated with a pressure gas source through a gas conveying pipe; the lower part of the gas distribution ring is provided with a plurality of gas spray pipes which are communicated with a cavity of the gas distribution ring, are arranged annularly and stretch into the ladle; the gas spray pipes obliquely spray gas to the junction of the ladle bottom and the ladle body of the ladle; a structural pipe is fixed in a central hole of the as distribution ring; a 'U'-shaped radiating body is fixed at the lower part of the structural pipe; a clearance is formed between the upper port of the 'U'-shaped radiating body and the ladle cover; a plurality of combustion-supporting air spray pipes communicated with the structural pipe are distributed around the structural pipe; the structural pipe is communicated with a pressure combustion-supporting air source through a combustion-supporting air pipeline; and the spray amount of the combustion-supporting air spray pipes is matched with that of the gas spray pipes and all the spray directions point to the junction of the ladle bottom and the ladle body. The stretch-in ladle heat exchange roasting nozzle can save 50 percent of energy.