Objective To observe the relationship between pan-immune inflammation value(PIIV)of left ventricular remodeling of patients with acute myocardial infarction(AMI)after the operation of percutaneous coronary intervention(PCI).Methods A total of 150 patients with AMI were selected as AMI group and 150 healthy adults as the control group.The PIIV levels were detected,and the correlation between the PIIV levels and left ventricular remodeling of the patients with AMI were analyzed.According to the median PIIV levels(681.32),the patients with AMI were divided into low PIIV group(≤ 681.32)and high PIIV group(>681.32).Results Compared with the control group,the PIIV value of AMI group increased significantly(P<0.05).Compared with low PIIV group,high PIIV group had higher white blood cell count,neutrophil count,monocyte count,platelet count,blood glucose,LVESV,LVEDV,and LVEF,while the lymphocyte count was lower(P<0.05).The ROC curve results showed that the AUC of PIIV predicting left ventricular remodeling of AMI patients was 0.868,with sensitivity of 89.2%and specificity of 76.7%.The results of the Logistic proportional risk model show that PIIV was a influencing factor for left ventricular remodeling of AMI patients after PCI.Conclusion PIIV is an independent predictor of left ventricular remodeling of AMI patients after PCI and has good predictive value.