Right chest pain can be clarified by relevant laboratory tests, chest X-ray, CT, breast ultrasound, etc. due to different reasons and accompanying symptoms, and there is no such thing as what test is the best. 1. Lung disease: when respiratory disease occurs, such as right-sided pneumonia, occupational lesion on the right side of the lungs, pulmonary embolism, right chest pain can occur, chest CT examination, laboratory tests, blood gas analysis, pulmonary function tests, etc. can be done to clarify the cause of the specific lesion. 2. Trauma: when the chest is traumatized, such as rib fracture and soft tissue injury, the right side of the chest pain is easy to appear, and lung X-ray, chest CT examination can be done to understand the specific conditions. 3. Breast disease: If the right side of the mammary gland occurs when the disease can also lead to the right side of the chest pain, such as mastitis, breast hyperplasia, breast tumors, etc., such a situation can be through the laboratory examination, breast ultrasound and so on to help clarify the cause of the disease. When right breast pain occurs, it is recommended to consult a doctor in a timely manner, under the guidance of the doctor to carry out relevant examinations to clarify the cause of the disease and carry out targeted treatment to avoid delaying the condition.