To observe the effect of comprehensive nursing intervention on the success rate of polysomnography (PSG) in monitoring (OSAHS) patients with sleep apnea hypopnea syndrome. 240 suspected OSAHS patients were randomly divided into two groups, 120 cases in each group. After admission, all patients were monitored by polysomnography. In the monitoring process, the control group according to the routine nursing methods, the observation group was given peri-monitoring nursing intervention at the same time, the diagnosis rate of OSAHS, monitoring success rate, comfort, emotional changes and satisfaction with nursing were observed. The positive rate of OSAHS in the observation group was 96.7% (116 / 120), which was significantly higher than that in the control group (95.0% (114 / 120) and 57.0% (65 / 114) P < 0.05). In the control group, 4 cases (3.3%) had shorter sleep time than 2 cases in the observation group (P < 0.05), and the GCQ scores of the observation group were (46.2 ±5.2) and (53.6 ±4.1) at the beginning of monitoring and at the end of monitoring, respectively, which were higher than those in the control group (P < 0.05). The nursing satisfaction in the observation group (95.0%) was significantly higher than that in the control group (85.8%) (P < 0.05). The comprehensive nursing intervention in the peri-monitoring period can effectively improve the success rate of PSG in monitoring OSAHS and improve the comfort of the patients during the monitoring process, thus improving the degree of satisfaction of the patients with the nursing work.