【Objective】To explore the possible effects of the apolipoprotein A5（APOA5）gene rs2075291 and rs3135507 poly? morphisms on plasma lipid levels and the severity of coronary stenosis in patients with coronary heart disease（CHD）in Chinese Han people.【Methods】Polymerase chain reaction-restriction fragment length polymorphism method（PCR-RFLP）was used to identify the genotypes of the rs2075291 or rs3135507 polymorphism for the 324 patients with CHD and the 152 CHD-free controls，and the lipid levels between the genotypes were compared. The severity of coronary stenosis was assessed by the Gensini scoring system，andthe associations of the rs2075291 and rs3135507 polymorphisms as well as other factors with the Gensini scores were analyzed by mul? tivariate linear regression.【Results】The CHD patients had higher prevalence of hypertension，and higher levels of triglycerides （TG），total cholesterol（TC），apolipoprotein B100（APOB100），lipoprotein（a）［Lp（a）］，TG/high-density lipoprotein cholesterol （HDL-C），TC/HDL-C，low-density lipoprotein cholesterol（LDL-C）/HDL-C and APOB100/apolipoprotein AI（APOAI），and low? er levels of HDL-C and APOAI than the controls（P < 0.05 for all）. The rs2075291 or rs3135507 allele and genotype frequencies were similar between the CHD group and the control group. The subjects with the rs2075291 GT genotype had higher levels of TG and TG/HDL-C，and lower levels of HDL-C than the subjects with the GG genotype in controls（P < 0.05 for all）. In CHD patients， those with the rs2075291 GT genotype had higher levels of TG/HDL-C and TC/HDL-C than the patients with the GG genotype（P < 0.05 for both）. Regarding the rs3135507 polymorphism，the A allele carriers had lower level of APOB100 than the patients with the GG genotype（P < 0.05）. No significant association between the rs2075291 or rs3135507 polymorphism and the Gensini scores were detected by multivariate linear regression（P > 0.05）.【Conclusion】The APOA5 rs2075291 polymorphism had significant effects on plasma lipid levels，but no effects on the occurrence and development of CHD. Further multicenter case-control studies with large samples are needed to validate these findings.