The invention relates to the technical field of disorder detecting devices, in particular to a sleep breathing disorder detecting device. The sleep breathing disorder detecting device comprises a breathing signal extracting circuit, filter and amplification circuit, an average value extracting circuit, a comparison and amplification circuit and a single-chip microcomputer, wherein the output end of the breathing signal extracting circuit is connected with the input end of the filter and amplification circuit, the output end of the filter and amplification circuit is connected with the input end of the average value extracting circuit, the output end of the filter and amplification circuit and the output end of the average value extracting circuit are respectively connected with the input end of the comparison and amplification circuit, the output end of the comparison and amplification circuit is connected with the input end of the single-chip microcomputer, and the single-chip microcomputer is respectively connected with a display module and a storage module. The sleep breathing disorder detecting device has the advantages that the device is simple, practical, convenient to operate and low in manufacturing cost, a person detected by the device does not feel uncomfortable, and normal sleep is unaffected.