Introduction
There were many causes of chest pain in patients. In addition to coronary stenosis, coronary spasm and microcirculation lesions were also common causes of chest pain [1]. Because there was no ”gold standard” for the detection of myocardial microcirculation lesions, especially for the diagnosis of myocardial microvascular spasm, some patients were often missed and misdiagnosed. We reported a case of ATP-induced microvascular spasm and the diagnostic value of echocardiography.