The invention discloses a quantative automatic gold powder adding device for hot press molding of a melamine resin vessel. The device is used for quantitively adding and proportioning powder placed inthe vessel in a processing course. The device is characterized in that the quantative automatic gold powder adding device for hot press molding of the melamine resin vessel comprises a workbin, a discharging device and a quantifying device, wherein the workbin is used for storing to-be-added powder; the discharging device is connected to the workbin for adding the powder in the workbin into the vessel; and the quantifying device is used for controlling the discharging capacity of the discharging device. The device disclosed by the invention has the beneficial effect that full-automatic powderadding equipment which adds the powder quantitively in the vessel is provided.