The model is an adult male upper body, which can achieve a variety of body positions during gastric lavage: supine position, left lateral position and sitting position;Accurate anatomical structure, including teeth, tongue, uvula, trachea, bronchus, left and right lungs, esophagus, stomach, diaphragm, gallbladder, pancreas, spleen, duodenum, colon, etc;The outer skin of chest and abdomen is a transparent shell, which is convenient to observe the internal anatomical structure and the whole process of operation;The transparent stomach of real size can observe the whole process of gastric tube entering and leaving the gastric cavity during operation, and can hold 300 ml liquid;After using the model, the residual liquid in the digestive tract can be easily discharged from the special pipe