The invention discloses a sugar boiling pot capable of recycling waste heat. The sugar boiling pot comprises a pot bottom, a steam chamber and a steam drum, wherein the pot bottom is provided with a feed pipe and a massecuite outlet, a juice catcher and a juice steam outlet are formed in the steam chamber, a steam condensate drainage pipe, a heating steam inlet pipe and a non-condensable gas drainage pipe are arranged on the steam drum, and an outlet of the non-condensable gas drainage pipe is connected to the feed pipe; two non-condensable gas inlets, namely a non-condensable gas lower inlet and a non-condensable gas upper inlet, are formed in the non-condensable gas drainage pipe; the distance from the non-condensable gas lower inlet to a lower tube plate is 100-200mm; the non-condensable gas upper inlet is formed above an upper tube plate with a distance of 5-10mm; and a valve is arranged on the non-condensable gas drainage pipe and is used for controlling the on-off and quantity of the discharge of non-condensable gas. According to the sugar boiling pot disclosed by the invention, syrups or molasses can be heated by using the heat of the non-condensable gas, and the heat energy of the non-condensable gas can be recycled so as to ensure that the problem that the non-condensable gas is directly discharged to cause energy waste in a conventional sugar boiling process can be solved.