Congenital heart disease is the first cause of death in children under 5 years old in China, with 300,000 new cases each year and an incidence rate of 0.8%. 1/3 of children with congenital heart disease die within a short period of time after birth because they are not treated effectively. Conventional open-heart surgery requires the use of extracorporeal circulation techniques, which are risky, traumatic and costly. The small incision transthoracic occlusion makes a much smaller incision in the chest wall than conventional surgery and does not require extracorporeal circulation techniques, and the occluder is delivered directly to the heart, regardless of weight. The cost is similar to the previous procedure. Ultrasound is used for guidance, no radiation is used at all, and real-time dynamic monitoring is safe and reliable. Transesophageal ultrasound monitoring technique means that the ultrasound probe is placed in the esophagus or stomach, and the structure and motion of the heart and blood vessels can be dynamically observed in multiple angles, long and short axes, and multiple views, including M-mode, two-dimensional (2D), three-dimensional (3D), pulsed or continuous Doppler, color flow Doppler, tissue Doppler, etc. The images are clear and easy to identify the residual tissue of the interatrial septum, independent of lung tissue and body position. This technique is a Class II technique in anesthesiology and ultrasound imaging departments, and is popularized in large hospitals nationwide. Transcatheter occlusion of common congenital heart diseases such as congenital atrial defect, ventricular defect and patent ductus arteriosus is indeed effective, less traumatic and without additional cost, which is a blessing for all children with congenital heart disease. We hope more children with congenital heart disease will be detected early, treated early with minimally invasive treatment and grow up healthy.