Provided are a method and device for detecting OSAHS. The method comprises: acquiring a vibration signal of a subject during sleep, and determining a breathing signal of the subject (S1), wherein the breathing signal comprises an inspiration signal generated upon inspiration and an expiration signal generated upon expiration; acquiring strength of a first vibration signal within a specified frequency range and superimposed on the inspiration signal, and strength of a second vibration signal within a specified frequency range and superimposed on the expiration signal adjacent to the inspiration signal (S2); and comparing, according to a preset method, the strength of the first vibration signal with the strength of the second vibration signal, and determining, according to a comparison result, whether the subject is snoring (S3). Since the detection is performed synchronously with breathing, the invention can prevent interference caused by coughing, speaking and other acoustic signals transmitted in the air, thereby significantly increasing accuracy in determining OSAHS. Moreover, the method and device of the invention can be realized by only making a minor modification to software in existing sleep sensors without incurring additional hardware costs.L'invention concerne un procédé et un dispositif de détection de SAHOS. Le procédé comprend les étapes suivantes : acquérir un signal vibratoire d'un sujet pendant son sommeil et déterminer un signal respiratoire du sujet (S1), lequel signal respiratoire comprend un signal d'inspiration produit par l'inspiration et un signal d'expiration produit par l'expiration; acquérir l'intensité d'un premier signal vibratoire dans une plage de fréquences spécifiée et superposé au signal d'inspiration, et l'intensité d'un second signal vibratoire dans une plage de fréquences spécifiée et superposé au signal d'expiration adjacent au signal d'inspiration (S2); et comparer, selon un procédé prédéfini, l'intensité du premier signal vibrat