Ultralow-temperature freeze-drying device and method for amomum tsao-ko

The invention relates to the technical field of freeze drying and discloses an ultralow-temperature freeze drying device and method for amomum tsao-ko, the ultralow-temperature freeze drying device comprises a box body, a box door, a display panel and a controller are installed on the front side face of the box body, a circulating fan, a limiting guide rail and a heating base are fixedly installed in the box body, and a stand column is installed in the limiting guide rail; a tray and a first handle are fixedly installed on the outer side face of the stand column, a resistance wire is fixedly installed in the heating base, a limiting sliding groove is formed in the box body, a condensation metal plate is installed in the limiting sliding groove, a reciprocating compressor is fixedly installed in the box body, and a condensation pipe is fixedly connected to the outer side face of the reciprocating compressor. A proper amount of amomum tsao-ko is evenly placed in the multiple trays, then the first handle is held