Abstract:To probe into the effect of Ticagrelor in Clopidogrel-resistant patients with acute myocardial infarction. Methods From January 2012 to December 2014, 100 patients with acute myocardial infarction were selected in our hospital. All the patients were resistant to Clopidogrel as myocardial infarction drug. The patients were randomly divided into treatment group and control group. There were 50 cases in each group. The patients in the treatment group were treated with Aspirin and Ticagrelor. The patients in the control group were treated with Aspirin and Clopidogrel. The clinical treatment of the patients in the two groups were analyzed and compared. Results The platelet count and platelet aggregation rate of the treatment group were significantly lower than those of the control group (p < 0.05). The ADP maximum aggregate time and ADP aggregation rate of the patients in the treatment group and the control group were compared, after statis-tical analysis, the differences were statistically significant, the ADP maximum aggregation time in the treatment group was significantly longer and the ADP aggregation rate was significantly higher that in the control group (p < 0.05). The levels of hypersensitivity C-reactive protein and P-selectin after treatment in the treatment group were markedly lower than those in the control group (p < 0.05). The overall incidence of complications in the treatment group was significantly lower than that in the control group (p < 0.05). Conclusions Ticagrelor has great significance in improving clinical efficacy and safety for Clopidogrel-resistant patients with acute myocardial infarction. It has the value of further clinical application and promotion.