Machine learning is a model that can help doctors deal with problems programmatically. With the advent of the big data era, this technology has made rapid progress in various fields, especially in the cardiovascular field, which has great potential value. At present, machine learning has been successfully applied to various fields of cardiovascular disease, providing convenience for clinical and imaging doctors, and realizing the accuracy and repeatability of disease diagnosis and treatment. This article elaborates the application and development on the machine learning in the field of cardiac ultrasound. while discussing the development direction.