This product is used to identify various structures of the heart under ultrasound images, for the exploration and on-site evaluation of cardiac ultrasound, and to train image recognition and analysis skills. The main body consists of three parts: a heart model that can be visualized by ultrasound, an esophagus that can be visualized by ultrasound, and the inferior vena cava to the femoral vein. The part of the heart model that can be developed by ultrasound is reconstructed based on the CT data of the real human body. The part of the structure has been reasonably designed and optimized and is made of special gel that can be used with medical ultrasound equipment by referring to the relevant size literature of the anatomical structure. Modular design, convenient to carry and use.