Abstract:Objective To investigate the characteristics and prognosis of acute myocardial infarction in migratory bird population and local population in southern Hainan. Methods A retrospective analysis of 357 patients with acute ST-elevation myocardial infarction (STEMI) induced by different climatic zone migrations from January 2015 to January 2018 in our hospital was performed with direct percutaneous coronary intervention (PCI), including 215 cases of migratory birds and 142 cases of local populations. The basic data, risk factors, clinical examination results, and outcomes in the hospital of the two groups were analyzed. Results In the first to second months after the arrival of winter in Hainan, there was no regularity in the local population. There was no significant difference in the sex ratio and average age between the migratory birds and the local population (P?>?0.05). In terms of risk factors, the population of migratory birds is mainly coronary atherosclerotic heart disease, diabetes, hypertension, and hyperlipidemia. The majority of young people in the local population are mainly hypertension, diabetes, and smoking, while the elderly are smokers and hypertension. The levels of SCr, cTnT, CKMB, NT-proBNP, and hs-CRP in the migrant population were significantly different from those in the local population (P?0.05), and more multi-vessel coronary lesions (P?0.05). Meanwhile, the proportion of post-myocardial infarction syndrome was high (P?0.05), the rate of recovery was low (P?< 0.05), the proportion of cardiogenic shock requiring IABP and the overall mortality rate of migratory birds was slightly higher, but no significant difference (P?>?0.05). The overall proportion of cardiogenic shock and mortality need IABP birds crowd higher, but the difference was not statistically significant (P?>?0.05). Conclusions STEMI patients in the southern part of Hainan have multiple coronary artery disease with high inflammatory factors, high proportion of patients with post-myocardial infarction syndrome and poor prognosis.