Abstract: Objective To investigate the association between H type hypertension and acute myocardial infarction（AMI）.Methods We selected 124 inpatients with hypertension and coronary heart disease of Tangshan workers’ hospital from december 2009 to June 2010,among whom 61 patients were classified as H group and the other 63 patients as simple group.According to the plasma hyperhomocysteinemia（Hcy）cutpoint ≥10 or ＜10 μmol/L.All the patients coronary angiography and AMI patients were confirmed acute vascular occlusion.The differences of the Homocysteine levels were determined by immuoassay.Results The serum Hcy level of the AMI patients in H group was higher than that of non-AMI patients I（20.24±9.52）vs non-AMI（13.35±2.15）μmol/L,P ＜0.01 ;The serum Hcy level of the AMI patients in simple group was lower than that of non-AMI patients I（7.61±1.29）vs without AMI（8.89±2.71）μmol/L,P ＜0.05 ;The serum TC level of AMI patients was higher than that of non-AMI I（5.46±0.96）vs non-AMI（4.65±0.75）,P ＜0.05 ;The serum low density lipoprotein cholesterol was higher than that of non-AMI patients I（4.11±0.87）vs non-AMI（2.80±0.67）μmol/L,P ＜0.05 .Logistic regression analysis showed H type hypertension was risk factor for acute myocardial infarction(OR =4.685,P ＜0.01 .Conclusion There are a close relation between H type hypertension and acute myocardial infarction,but no relation between H type hypertension and the levels of blood lipid.H type hypertension was risk factor for acute myocardial infarction.