Disclosed is a sleep monitoring device host computer and a sleep monitoring device, comprising a host computer body (10) and a switch (10) set on the host computer body, and further comprising a cover (20) and a second magnet (21) provided on the inner surface of the cover (20), wherein the host computer body (10) comprises a housing (11) and a first magnet (12) provided on the outer surface of the housing (11), and the host computer body (10) is adsorbed into the cover (20) by the first magnet (12) and the second magnet (21). The sleep monitoring device may be comprised in a sleep monitoring device. The sleep monitoring device comprises a host computer body (10), a cover (20) and a second magnet (21) provided on the inner surface of the cover (20), wherein the host computer body (10) comprises a housing (11) and a first magnet (12) provided on the outer surface of the housing (11), and the host computer body (10) is adsorbed into the cover (20) by the first magnet (12) and the second magnet (21). Therefore, during use, a bed sheet is sandwiched between the host computer body (10) and the cover (20) so as to solve the problem of the fixation of the sleep monitoring device. The sleep monitoring device can be fixed securely, and thereby avoids damage to the mattress and the sleep monitoring band.La présente invention concerne un ordinateur hôte de dispositif de surveillance du sommeil et un dispositif de surveillance du sommeil, comprenant un corps dordinateur hôte (10) et un commutateur (10) disposé sur le corps dordinateur hôte, et comprenant en outre un couvercle (20) et un deuxième aimant (21) disposé sur la surface interne du couvercle (20), le corps dordinateur hôte (10) comprenant un boîtier (11) et un premier aimant (12) disposé sur la surface externe du boîtier (11), et le corps dordinateur hôte (10) est adsorbé dans le couvercle (20) par le premier aimant (12) et le deuxième aimant (21). Le dispositif de surveillance du sommeil peut être compris dans un disp
