Left abdominal flexion is one of the clinical manifestations of splenic trauma. The typical symptom of simple splenic rupture is that after a direct blow to the left upper abdomen or a severe fall and impact, the child cannot stand upright immediately, especially with left abdominal flexion. Even can not stand up, lying position hi left side down, waist forward bending, afraid to move. So how to prevent the left abdominal flexion it? 1, keep a calm mood, avoid emotional excitement, follow medical advice bed rest. 2, pay attention to recuperation and diet, prohibit smoking and alcohol, eat light, easy to digest food, avoid overeating. 3, constipation, pay attention to adjust the diet, keep the stool smooth, ineffective can be appropriate oral laxative, avoid force defecation. 4. The upper and lower poles of the spleen are very narrow, and its diaphragmatic surface is bent into an extremely convex form, while its bottom is overstretched, making the spleen very easy to be transected. 5. The spleen parenchyma is very fragile and rich in blood flow, which can easily cause rupture and bleeding when subjected to external forces. Clinically, splenic injury or rupture caused by direct or indirect external forces is called traumatic or injurious splenic rupture. Traumatic splenic rupture can be classified as open or closed. In addition, there are also spontaneous splenic rupture and medically induced splenic rupture. 6, traumatic splenic rupture is mostly caused by knife or shrapnel injuries in open cases, often accompanied by other visceral injuries, while closed cases are caused by direct or indirect violence such as falls, punches, car accidents, etc. It is the most common clinical abdominal injury. 7, to develop good habits, quit smoking and limit alcohol. Smoking, the World Health Organization predicts that if people are no longer smoking, after 5 years, the world’s cancer will be reduced by 1/3; secondly, do not abuse alcohol. Smoking and alcohol are extremely acidic acids, and long-term smoking and drinking are very likely to lead to an acidic body. 8. Don’t eat too much salty and spicy food in daily life, don’t eat food that is too hot, too cold, expired and spoiled; eat some anti-cancer food and alkaline food with high alkaline content as appropriate for those who are old and weak or have genes of certain diseases, keep a good mental state, avoid trauma and treat in time.