Dullness and tightness on both sides of the rib cage may be caused by excessive exercise, which is usually relieved after rest. It may also be caused by diseases such as costochondritis and emphysema, which are often accompanied by pain, pressure, breathing difficulties and other discomforts. A, physiological factors: if a long time to carry out a bar, sit-ups and other sports, due to excessive exercise may cause excessive local lactic acid accumulation, and then easy to appear on both sides of the rib cage stuffy and tight feeling symptoms, often accompanied by soreness. Generally, after stopping the exercise, it can be gradually relieved after proper rest. Second, pathological factors: 1, costal chondritis: costal chondritis due to infection with pathogenic bacteria, resulting in local swelling, pain, can appear on both sides of the rib cage swelling and tightness symptoms, when the chest pressure, breath, deep breathing, coughing symptoms will increase. In this regard, patients can use ibuprofen, naproxen and other drugs as prescribed by the doctor, anti-inflammatory and analgesic to relieve discomfort, if necessary, can be treated by rib cartilage cut; 2, emphysema: refers to the respiratory fine bronchi, alveolar ducts, alveolar sacs, alveoli due to reduced elasticity of lung tissue, and over-inflation, a permanent expansion, and accompanied by destruction of alveolar septum, resulting in the pathological state of lung volume. Such patients may experience a feeling of tightness and stuffiness on both sides of the rib cage. In this regard, bronchodilators such as aminophylline and theophylline extended-release tablets, and antibiotics such as amoxicillin clavulanate potassium, cefazoxime, cefuroxime, etc. should be used as prescribed by the doctor to reduce inflammation and phlegm, and to relieve stuffiness and tightness. If the effect of medication is not good or serious pulmonary alveoli, surgery can be taken, commonly used surgical methods are pulmonary herpetotomy, pulmonary decongestion, etc.; 3, other: liver, spleen diseases, etc. may also cause stuffiness and tightness on both sides of the rib cage. Liver common hepatitis and other causes, such as viral hepatitis, can follow medical advice to use antiviral drugs and liver-protective drugs, such as entecavir tablets, tenofovir, ursodeoxycholic acid, etc.. It is recommended that patients must pay attention to rest and should eat easily digestible, vitamin-rich foods, such as egg custard and kiwi. Splenomegaly is common in the spleen, and most patients clinically require surgical treatment such as splenectomy and splenic artery embolization when necessary. If the patient is unwell, he or she must go to the hospital in time to achieve early detection, early diagnosis and early treatment to avoid aggravation of the disease. It is also important to pay attention to a balanced diet, pay attention to the combination of work and rest, and do appropriate physical exercise, such as running, rope skipping, swimming, etc., in order to enhance physical fitness.