Objective:To investigate atrial fibrillation patients′illness perception during the blanking period after pulmonary vein isolation (PVI) and to analyze its influencing factors, so as to provide a reference for improving patients′cognition of the disease and speeding up the rehabilitation process.Methods:This study was a cross-sectional survey. Convenience sampling method was adopted to select 320 patients with atrial fibrillation who were reexamined in the outpatient department during the blanking period after PVI from Affiliated Hospital of Qingdao University from Auguest 2022 to May 2023 as the research subjects. The General Information Questionnaire, the Brief Illness Perception Questionnaire (BIPQ), and the Control Attitudes Scale-Revised (CAS-R) were used for on-site investigation.Results:Totally 320 patients were included in this study, including 177 males and 143 females, aged (61.64 ± 10.74) years old. The total score of BIPQ was (42.98 ± 10.49) points, the total score of CAS-R was (27.20 ± 5.65) points. The results of multiple linear regression analysis showed that age, resting heart rate, postoperative course, and perceived control were the influencing factors of illness perception ( F = 25.24, P<0.05). Conclusions:The illness perception of atrial fibrillation patients during the blanking period after PVI needs to be improved urgently. Medical staff should pay more attention to patients with old age, fast resting heart rate, short postoperative course, and low perceived control, and take effective measures to reduce negative illness perception and promote postoperative rehabilitation.