Abstract: Dual antiplatelet therapy has markedly improved the prognosis of acute coronary syndrome. However, thrombosis or bleeding occurs in some patients during treatment, demonstrating the necessity of a platelet aggregation function test. The platelet aggregation function test can evaluate the reactiveness to the antiplatelet agents for treatment adjustment. At present, a platelet aggregation function test can be conducted by a variety of methods. This review provides a brief introduction of the different test methods used clinically and analyzes the clinical significance of the test results.