A pain point has two meanings: one is a body limb, which may have an associated lesion or injury, and the location where the pain appears is called a pain point. The phenomenon of a sore spot is an injury or lesion that is relatively painful and limited. For example, localized contusions, chronic labor injuries to muscles, and acute sprains, contusions, and strains of other soft tissues can present as definite painful points. There are also other diseases that appear as radiating painful points of body surface location, which can also be called painful points, and this is a more common meaning. Another meaning of a pain point in Chinese medicine is the body’s A-Yi point. The A-Yi point can be any location where a limited pain phenomenon occurs when a disease arises in the meridians of the limbs. The pain point can be an effective point for treatment, and treatment at the localized point will have better clinical efficacy.