Abstract: Disclosed is an overmolding device of a cosmetic vessel including a cosmetic vessel made of glass, a cooling means for cooling the inside of the cosmetic vessel, and left and right outer molds and overmolding an outer shape of the cosmetic vessel with the cosmetic vessel and the cooling means interposed therebetween. According to the present invention, it is possible to prevent breakage of the vessel due to a molding temperature by cooling the inside of the cosmetic vessel by the cooling means at the time of overmolding of the cosmetic vessel such as a perfume bottle.