The utility model relates to a controlling temperature and humidity's concrete curing means under subzero temperature environment belongs to the on -the -spot maintenance field of concrete. The utility model discloses it is reasonable and compact, convenient to use, it is personally experienced sth. Part of the body including thoughtlessly congealing soil box, it is become by leakproofness template seal group thoughtlessly to congeal the soil box body, sealed lid is installed at the box top, sealed lid package heated board, safety net, benzene board and film, sealed covering is equipped with flexible hole, infrared thermometer measures the inside temperature of concrete through flexible hole, at least, set up a temperature and humidity sensor on the box inner wall, concreted structure's humiture can be learnt through temperature and humidity sensor in real time to select whether to take the maintenance measure, the maintenance humidity of concrete can be kept through the moisture belowthe increase heated board, can the temperature of maintenance be kept through the quantity that increases the surface thermal insulation board.