The invention discloses an automatic weighing and bottling device for chemical products. The automatic weighing and bottling device comprises an automatic weighing mechanism, an automatic conveying mechanism and a bottle cap packaging mechanism, wherein the automatic conveying mechanism clamps packaging bottles through electric clamps and sequentially conveys the packaging bottles to the automaticconveying mechanism and the bottle cap packaging mechanism. The automatic weighing and bottling device has the advantages of being time-saving, labor-saving, high in efficiency and capable of savinga lot of manpower and financial resources, and is mainly used for automatic weighing and bottling of the chemical products.