Objective:To study the risk factors and the clinical and biochemical features of the patients under the age of 45 suffering from spontaneous intracerebral hemorrhage(SICH).Methods:The risk factors and clinical manifestation of 70 cases of SICH were studied retrospectively.Results:The risk factors included hypertension(28cases

40%)

regular smoking(19cases

27%)

long-term alcohol drinking(14cases

20%).The bleeding location was basal ganglia area(36cases

51%

19 cases on left side and 17cases on right side)

lobar(19cases

27%)

brain stem(7cases

10%)

ventricles(3cases

4%)

cerebellum(1case

1%)

multi-foci(4cases

6%).There were 10 cases bleeding into ventricles(14%).57cases(81%)had good pronosis

8 cases died.There were 7 cases(among 30cases)who the TC level were less than 4.128mmol/L.The average hospitalization days of those with WBC≥10×10~9/L were longer than that with WBC<10×10~9/L.12 cases(17%)with WBC>20×10~9/L had poor prognosis.Con- clusion:Risk factors of patients of SICH under the age of 45 are hypertension

smoking and long-term alcohol drinking.Basal ganglion is the most common bleeding location.Low TC level lends to may be a risk factor of young patients.WBC counting can help evaluate the prognosis.