Soreness at the root of the right thigh from walking is usually seen in the case of strain and cold in the muscles and soft tissues at the root of the thigh, usually due to excessive walking, holding a posture for too long, or not keeping one side of the thigh warm enough during sleep at night, which leads to the gradual formation of local inflammatory lesions, and the painful sensation occurs when the inflammatory metabolites stimulate the peripheral nerves around it. In addition, due to the stimulation of inflammation as well as cold, it will lead to muscle tension, and the small blood vessels penetrating from the muscles will also contract, resulting in decreased blood circulation to the muscles, and the muscles will not get enough arterial blood supply, and the soreness will occur. The inflammatory metabolites produced by decreased venous return, which cannot be metabolized effectively, will aggravate the stimulation of peripheral nerves and tissues, resulting in increased pain as well. After warmth, hot compresses, and appropriate activities are performed, blood circulation is accelerated, inflammatory metabolites are gradually metabolized, and symptoms are significantly relieved.