The invention discloses a bulk curing barn leaf scrap insertion tobacco filling continuous heating roasted fragrant and roasted soft roasting method. The method includes following steps: (1), adopting a leaf scrap insertion specified mode for tobacco filling; (2), inspecting a bulk curing barn with a curing barn controller, adopting a lower air dividing partition for control on the controller in the airflow-up bulk curing barn, going through a yellowing period, a color fixing period and a stem drying period, wetting back, and unloading the tobacco, wherein the bulk curing barn is an airflow-up bulk curing barn for roasting. By the method, fragrance ingredient content of tobacco can be averagely increased by 9.3% while roasting quality of all-kang tobacco, smooth cigarette amount can be averagely reduced by 28.7%, and first-glass cigarette proportion can be averagely increased by 12.1. The roasting method is terse and concise, convenient for roasting personnel to master, set and modify and capable of increasing income of tobacco growers.