Tachycardia induced cardiomyopathy is a kind of cardiomyopathy caused by sustained or recurrent tachycardia.Various types of tachyarrhythmias can cause TIC, and the main clinical manifestations of it are cardiac dilatation and cardiac dysfunction.TIC can occur at all ages and is a reversible and acquired cardiomyopathy with a generally benign prognosis.After early diagnosis and reasonable treatment to relive the tachycardia, the function of the heart can partially or completely recover.In clinical practice, pediatricians do not fully understand the disease, as a result, it is easily missed, misdiagnosed, then the proper diagnosis and treatment will be delayed.This article provides a systematic overview of the pathogenesis, clinical characteristics, diagnosis, differential diagnosis, treatment and prognosis of TIC in children, and aims to provide a basis for clinical pediatricians to recognize it early and treat it promptly.