The invention provides a burley tobacco baking system. The burley tobacco baking system comprises a cover body and a hot air supply device, wherein the cover body comprises a pretreatment section, a first baking section and a second baking section which are sequentially connected in the horizontal direction; a partition plate is arranged between the first baking section and the pretreatment section and between the first baking section and the second baking section separately; one end, away from the first baking section, of the pretreatment section is provided with a feed port for tobacco leaves to enter, and one end, away from the first baking section, of the second baking section is provided with a discharge port; a roller opposite to the feeding port is formed in the pretreatment section, and flow through holes are distributed in the circumferential direction of the roller; one side of the pretreatment section is provided with an air inlet, the air inlet is located below the roller,and the top of the pretreatment section is provided with a moisture discharge pipe; and hot air supply device is connected with the air inlet, wherein hot air provided by the hot air supply device enters the pretreatment section through the air inlet, and then enters the roller after passing through the flow through holes, so that the tobacco leaves in the roller are in a suspended state. By virtue of the burley tobacco baking system, the pre-baking tobacco leaves can be pretreated, so that the baking quality is improved.