The utility model discloses a heat preservation and dehumidification stock bin. Stock bin, the upper end of the stock bin is hinged and covered with a heat-preservation sealing top cover; the interiorof the heat-preservation sealing top cover is vacuum; a sealing strip is mounted at the end, in covering contact with the bin, of the heat-preservation sealing top cover; a magnet sheet is attached to the bottom of the sealing strip; a vacuum heat preservation bin body is arranged on the inner side of the stock bin, the vacuum heat preservation bin body is arranged in a vacuum sealing mode, a dehumidification interlayer body is further arranged on the inner side of the vacuum heat preservation bin body, a through hole is formed in one end of the dehumidification interlayer body, a material changing opening and closing door is further installed on one side of the dehumidification interlayer body, dehumidification fillers are filled in the dehumidification interlayer body, and moving pulleys are further installed at the bottom of the stock bin. By means of the mode, the dehumidification device can be used as a PVC raw material heat preservation storage and transportation tool and has the dehumidification effect, the dehumidification fillers in the dehumidification interlayer body are used for absorbing water vapor, the air pressure in the stock bin is reduced, so that the device hasthe self-sealing performance, the sealing strips have the magnetic attraction performance, and it is guaranteed that heat is dissipated in a seamless mode.