Abstract:To analyze the risk factors for arrhythmia -atrial fibrillation in patients with cerebral infarction, in order to improve the prognosis of the patients. Methods Clinical data of 96 patients with cerebral infarction treated in Nanyang Central Hospital of Henan Province were investigated and retrospectively figured.Twenty -three patients with arrhythmia -atrial fibrillation after cerebral infarction were enrolled into observation group, and seventy-three cases without arrhythmia-atrial fibrillation were enrolled into control group. The factors that might affect arrhythmia-atrial fibrillation were analyzed by single-factor two-sample comparison, and multivariate logistic regression analysis was used to confirm the risk factors. Results The factors influencing arrhythmia-atrial fibrillation of the patients with cerebral infarction included age of 70 years or older, a family history of cardiac arrhythmia -atrial fibrillation, massive cerebral infarction, NIHSS score of 16 points or more, complication with hypertension, complication with diabetes, cardiac function of III -IV grades, anti -coagulation therapy, taking thrombolytic drugs, surgical treatment of cerebral infarction, LAD more than or equal to 45 mm, LEVDD more than or equal to 50 mm, carotid soft plaque, proper exercise, etc (p < 0.05). Multivariate logistic regression analysis showed the risk factors for arrhythlow according to the risk degree were massive cerebral infarction (OR = 3.987), soft plaque of carotid artery (OR =3.246), NIHSS score more than or equal to 16 points (OR = 3.214), combination with hypertension (OR = 2.067)and age more than or equal to 70 years (OR = 1.932). Factors such as anticoagulant therapy, thrombolytic therapy, cerebral infarction surgery, and proper exercise were the protective factors of arrhythmia-atrial fibrillation in the patients with cerebral infarction (b < 0, 0 < OR <1, p< 0.05). Conclusions There are various kinds of risk factors for arrhythmia-atrial fibrillation in patients with cerebral infarction. In clinic, measures should be taken for patients with large area cerebral infarction, carotid artery soft plaque, NIHSS score more than or equal to 16 points and combination with hypertension; at the same time anti-platelet aggregation and thrombolytic drugs should be given and appropriate exercise should be instructed to reduce the incidence of arrhythmia-atrial fibrillationmia-atrial fibrillation .