This invention relates to a bean baking device, comprising a machine body, a transmission element, a power source motor, at least two internally hollow drums, and a stove, wherein the machine body has a base. The rotary wall perpendicular to the base, and a movable wall facing the rotary wall the rotary wall is pivotally connected with the base by a hinge. The transmission element is disposed on the machine body. The drum has a first end and a second end. The first end is connected to the rotary wall and has an opening communicated with the interior of the drum. The opening is sealed by a cover. The second is pivotally connected to the movable wall, and the drum is driven by the transmission element to rotate. With the transmission element driving several drums to rotate, those drums can receive different kinds of grains like coffee beans, and respectively control the baking time according to the preference of each person to bake different kinds and roast degrees of coffee beans at one time.本發明烘豆裝置,包括:一機體、一傳動元件、一動力源馬達、至少二內部中空之滾筒及一爐具。該機體具有一底座、一垂直於該底座的旋轉壁及一與該旋轉壁相面對的一活動壁,該旋轉壁藉一鉸鍊與該底座樞接,該傳動元件設於該機體上,該滾筒具有一第一端與一第二端,該第一端連接該旋轉壁並具有與該滾筒內部相通的一開口,該開口被一蓋子封設,該第二端樞接在該活動壁,該滾筒受該傳動元件之驅動產生旋轉。藉該傳動元件驅動數個滾筒旋轉,各滾筒可容設不同種類穀物如咖啡豆,並分別控制烘焙時間可依各人之喜好一次烘焙出不同種類及熟度的咖啡豆。10‧‧‧機體101‧‧‧底座102‧‧‧旋轉壁103‧‧‧活動壁104‧‧‧鉸鍊11‧‧‧傳動元件12‧‧‧動力源馬達121‧‧‧第一傘齒輪122‧‧‧第二傘齒輪13‧‧‧滾筒131‧‧‧第一端133‧‧‧開口134‧‧‧蓋子135‧‧‧蝸輪
