Left atrial structural and functional parameters play an increasingly important role in the assessment of global cardiac function,and have predictive value for a variety of cardiovascular diseases.Early and accurate assessment of left atrial structure and function is of great significance to the clinical treatment and prognosis of patients.Echocardiography is the most commonly used imaging method for clinical evaluation of left atrial structure and function.This article reviews the application progress of echocardiography in the evaluation of left atrial structure and function.