The invention relates to the technical field of accessory devices of drying equipment, in particular to an energy-saving drying room. Convenience can be brought to use of the drying room by folding two sets of containing frames; and damage of workers to the environment of the drying room can be reduced through the arrangement of a protective device. The energy-saving drying room comprises a dryingroom body, an air compressor and a heat exchanger. A containing cavity is formed in the drying room body, and the top end output end of the air compressor communicates with the bottom end input end of the heat exchanger. The energy-saving drying room further comprises two sets of left fixing frames, two sets of right fixing frames, two sets of left folding frames, two sets of right folding frames, two sets of left sliding blocks, two sets of right sliding blocks, two sets of left hinges, two sets of right hinges, two sets of left limiting blocks and two sets of right limiting blocks. Two setsof left sliding grooves are formed in the right regions of the two sets of left fixing frames, and two sets of right sliding grooves are formed in the left regions of the two sets of right fixing frames. The energy-saving drying room further comprises a filter net plate, a collector and a pull rod. A fixing cavity is formed in the front region of the bottom end of the drying room body, and a filter net penetrates through the top end of the filter net plate.