Abstract: The objiective of the study is to observe the changing in risk factors and onset age of stroke in recent years. 2 154 cases of patients from 1995 to 1996 were collected, and 10 547 cases of data from review of cases in past 25 years (1972～1996) were compared. The percent of patients younger than 51 is 16.32% for 1972～1976, 22.72% for 1992～1996 respectevely. The percent age of patients younger than 41 is 1.29% 1972～1976, 7.83% for 1992～1996. Risk factors of patients are hypertension (81.1%), hyperlipoidemia(68.4%), hyperglycosemia(54.4%), and the occurrence of cerebrovascular disease tends to transit to younger group of people.

Key words: stroke, risk factors, onset of age