An electrocautery device is disclosed, which includes: a stick body having a housing and an internal partition connecting to the housing, which define a receiving space and an air-removal channel, wherein the housing has a first, second and third opening at a first end, and has a fourth opening at an opposite second end, wherein the first and second openings connect to the receiving space, and the third and fourth openings connect to the air-removal channel which is provided for connection of an external air-removal device an electrode-blade penetrating through the first opening into the receiving space a light emitting component arranged at the first end, which emits light via the second opening and a circuit component electrically connecting the electrode-blade and the light emitting component and provided for electrical connection of an external power supply. The electrocautery device has both abilities of illuminating affected parts and exhausting harmful gases.本創作係有關於一種電刀裝置,包括:殼體,具有外殼及內壁,該內壁連接該外殼,並定義出容置空間及抽氣通道,該外殼之第一端具有第一開口、第二開口、及第三開口,該外殼相對於第一端之第二端具有第四開口,其中,第一開口及第二開口連接容置空間,第三開口及第四開口連接抽氣通道,並供外部抽氣裝置經由第四開口連接抽氣通道;電極刀組,穿過第一開口設置於容置空間中;發光元件,設置於第一端,並經由第二開口發射光線;以及電路元件,電性連接電極刀組及發光元件,並供外部電源裝置電性連接,故可達良好照明及抽除有害氣體的功能。