The invention discloses a sintering ignition furnace and an adjusting method thereof. The sintering ignition furnace comprises an upright post, a furnace roof, a side wall and a plurality of burners, wherein a joist is fixedly arranged on the upright post; the side wall is supported by the joist; the furnace roof is erected on the side wall; the burners are arranged in the furnace roof, and comprise first burners used for ignition of a conventional material surface, and second burners used for ignition of a broaden material surface; an adjusting component used for moving the side wall is arranged between the side wall and the upright post. The sintering ignition furnace has the advantages that the sintering ignition furnace is simple in structure, convenient to adjust, short in modification period and low in modification cost. The adjusting method comprises the following steps: moving the side wall to a target position through the adjusting component; removing the redundant part of the joist; sealing the clearance between the furnace roof and the side wall by applying a sealing material. The adjusting method has the advantages that the adjusting method is simple in steps, easy to adjust, and high in adjusting speed and efficiency.