Right chest pain may be due to costochondritis, breast hyperplasia, pleurisy, pneumothorax or lung tumor and other diseases, the specific cause of the disease need to go to the hospital for examination and diagnosis, and timely treatment to avoid delaying the condition. 1. Costochondritis: Costochondritis refers to the inflammatory reaction of the cartilage at the junction of sternum and ribs, which is usually manifested as obvious pain in the right side of the front chest. 2. Breast Hyperplasia: Breast Hyperplasia is a structural disorder of the breast due to hyperplasia of the breast tissue and mesenchyme as well as incomplete regeneration. It is mainly manifested by breast swelling and pain, which leads to the patient feeling pain in the right chest. 3. Pleurisy: Pleurisy is a series of inflammatory reactions in the pleural cavity due to invasion of the pleura by various pathogenic bacteria, and the patient will mainly show symptoms of chest pain and chest tightness. 4. Pneumothorax: Pneumothorax is a kind of gas accumulation caused by gas entering into the pleural cavity, which will increase the pressure in the pleural cavity, usually manifested as chest pain and dyspnea, which will lead to right chest pain. 5. Lung disease: if the lung tissue disease is not treated timely, it will involve the wall pleura, which is innervated by the body nerves and is more sensitive to pain, thus causing obvious symptoms of right chest pain. Right chest pain is caused by a variety of diseases, it is recommended to go to the hospital in time for examination and diagnosis, and according to the doctor’s guidance for targeted treatment, to avoid delaying the aggravation of symptoms on the body to cause adverse effects.