The present invention relates to a portable steamer, the purpose of which is to be able to easily set the heat storage temperature of the steamer according to the user's preferred temperature to maximize the product utilization. According to the portable steamer according to the present invention for this purpose； The upper casing 11 and the lower casing 12 are assembled to form a heat storage space 13 in which the heat insulating material 14 is filled, and on one side, a connector 20 for receiving power from the outside is disposed. It is a poultice base 10； A sheath-heater disposed at the central portion of the heat storage space 13 of the steaming body 10 and connected to the terminals of the connector 20 through the first lead wire 91 and the second lead wire 92, respectively. A ceramic block 30 arranged to accumulate heat； A conductive plate 40 having one end fixed to contact the ceramic block 30 and the other end spaced apart from the ceramic block 30； Disposed at the other end of the conductive plate 40 and electrically connected to the midway of the first lead wire 91 which electrically connects one terminal of the connector 20 and one end of the sheath-heater 31. Bimetal temperature sensor 50 is turned off so that the power supply to the siege-heater 31 is cut off when the temperature of the other end of the conductive plate 40 is transferred from the ceramic block 30 is more than 90 ℃； An edge of the inside of the poultice base 10 is arranged to be electrically connected to the middle of the second lead wire 92 that electrically connects the other terminal of the connector 20 and the other end of the sheath-heater 31. If the temperature is above a certain temperature, the bimetal switching member 61 and the support plate of the bimetal switching member 61 is turned off so that the contact terminal 62 is turned off so that the power supply to the siege heater 31 is cut off. Adjusting the spring constant value of the contact terminal 62 to be mounted in the
