<h3>Objective</h3> To explore the association of the serum C-reactive protein (CRP) level with the CRP gene T-757C polymorphism and risk of acute myocardial infarction (AMI) in Chinese Han population of Sunan region. <h3>Methods</h3> The CRP gene T-757C polymorphism was genotyped by polymerase reaction restriction-fragment length polymorphism analysis, and the serum CRP level was measured by enzyme-linked immune sorbent assay in 213 AMI patients (AMI group) and 173 subjects without coronary heart disease (CHD) (control group). <h3>Results</h3> ➀In Chinese Han population of Sunan region, there were CRP gene T-757C polymorphisms in patients with AMI and in subjects without CHD; ➁The serum CRP level in AMI patients (5.985/6.527μg/ml) was significantly higher than those in non CHD subjects (3.262/1.356μg/ml) (<i>P</i> < 0.01) and there were still significant differences after adjustment for gender, age, smoking, hypertension, diabetes and dyslipidemia (<i>P</i> < 0.01); ➂In AMI patients, no significant differences were found in the serum CRP level among any genotype (CC, TC or TT) of the CRP gene T-757C (4.069/2.493 pg/ml <i>vs</i> 5.745/6.321 pg/ml <i>vs</i> 6.127/6.629 pg/ml), and there also were no significant differences in the serum CRP level among any genotypes in this locus within the same gender and age (<i>P</i> > 0.05). <h3>Conclusions</h3> The serum CRP level in AMI patients is significantly higher than those in non CHD subjects but not influenced by CRP gene T-757C polymorphism in Chinese Han population of Sunan region.