Objective To investigate gender-related differences in risk factors,clinical manifestation and outcomes in patients with aortic dissection(AD)from Guangzhou.Methods Consecutive patients with AD admitted to our institute over the past 10 years were included in this retrospective analysis.Prevalence of hypertension, smoking, thickness of intraventricular septum and left ventricular posterior wall measured by echocardiography,and outcomes were compared between male and female AD patients.Results There were more male AD patients than female AD patients(5.33:1) from the 418 patients.Prevalence of hypertension, thickness of intraventricular septum and left ventricular posterior wall were similar in male and female AD patients.Heavy smoking history was 56.5%in males and 13.6%in females(P=0.000).Acute survival rate in female patients tended to be better than that in male patients.Conclusions There were significantly more male AD patients than female AD patients in this cohort.Prevalence of heave smoking in male patients is 3 times hisher than that in female population.