In men, vague pain below the right chest can be seen in the following cases: a. Pneumonia: pneumonia appearing in the right lower lung can be manifested as vague pain below the right chest, and the patient may also have symptoms such as coughing, coughing, fever, shortness of breath, etc. The characteristics of chest pain are related to breathing, and the chest pain is aggravated when inhaling deeply, coughing and rotating the position, and is weakened or disappears when holding the breath, it is recommended to do chest X-ray or lung CT for clear diagnosis. Second, a small amount of pleural effusion: a small amount of pleural effusion in the right lower lung can appear pleurisy-like pain, the nature is closer to the pain of pneumonia involving the pleura, it is recommended to do chest X-ray, lung CT or chest ultrasound to make a clear diagnosis. Hepatobiliary system diseases: When patients have liver diseases or gallbladder stones or cholecystitis, they may show vague pain in the lower right chest or upper right abdomen, and it is recommended to do liver, gallbladder and spleen ultrasound and liver function examination for clear diagnosis.