The present invention relates to a method and a device for producing a red ginseng by using high temperature/high pressure. More preferably, the present invention relates to a method and a device for producing a red ginseng by using high temperature/high pressure, in which a ginseng processed product is colored and polished by using a high temperature/high pressure steamer. In terms of the outer appearance of the ginseng processed product, the original state thereof is intactly maintained. At the same time, in terms of the contents thereof, a ginsenoside (saponin) component having an herbal medicinal component penetrated therein is reinforced. According to the method of the present invention, a sorted wild ginseng is added in a tumbler washer to be cleanly washed and to be precipitated for 24 hours. The wild ginseng is added in a net, and a pressing device is operated from when heating temperature exceeds 100C. When the wild ginseng is steamed by vapor by applying pressure of 0.5-1.3 Mpa for 10 minutes which are a short time within a temperature range of 120 to 180C, one or more of Schisandra, crataegus fruits, Cornus officinalis SIEB. et Zucc., Chinese quince, and Japanese apricots containing an acidic component are mixed on the surface of the wild ginseng. A mixed extract liquid contained in a medicinal water tank is pumped by a pump and is sprayed through multiple spray nozzles mounted on the end part of a spray pipe to be penetrated into the wild ginseng. Then, the wild ginseng is dried at 50-55C by using a hot air dryer, and a red ginseng is produced to have a moisture content of 14%. When the mixed extract liquid is mixed with vapor and is circulated to the medicinal water tank, a concentration sensor mounted on the medicinal water tank senses the concentration of the mixed extract liquid. When the concentration becomes lower, a raw liquid of the mixed extract liquid is added in the medicinal water tank and is circulated to the inside of a steaming chamber to
