An evaporative scent burner comprises a bottle, which is used to accommodate the essential oil, with its top provided with a bottle mouth, a gypsum evaporative base, with its bottom provided onto the bottle mouth of above-mentioned bottle and its top designed with an enlargement surface, a braided wire, which head is connected to the gypsum evaporative base while the bottom of the braided wire will fall inside the bottle to absorb essential oil. The advantages of the present invention include: A reinforcement base, which is built-in the gypsum evaporative base and constructed of rigid materials of strong toughness. The screw notch of reinforcement base is provided with a punching hole, where braided wire can cross through and the braided wire head can be fastened. Besides, this reinforcement base is available with a ring-type wall to separate braided wire and gypsum evaporative base, so as to prevent the gypsum evaporative base from breakdown or strip for a leak-proof efficiency.