Objective: This Paper discusses the impact of polymorphism ofangiotensin converting enzyme gene on premature coronary hear disease with blood stasis syndrome.Methods: Using technology of PCR to detect the ACE genotype and allele fiequencies of the 41 cases of Premature coronary heart disease with blood stasis syndrome, 45 cases of non-blood stasis syndrome of premature coronary artery disease and 38 cases of normal control group, while detection the content of nitric oxide (NO) and plasma endothelin (ET).Results: Premature coronary heart di...