The blood flow in the human body is accelerated after exercise, which is manifested by the expansion of blood vessels in the human body, so the face is particularly red after exercise, which is a normal phenomenon. After exercise, the heartbeat accelerates the blood supply of the face will be more abundant, so it is expressed as the face is red. The appropriate rise in body temperature after exercise, resulting in microvascular expansion, increased cardiac output in the face is particularly red. If there are no other uncomfortable feelings, such as panic, chest tightness and tightness of breath, then it does not matter. If the above symptoms occur, you should go to the hospital for further examination to rule out other diseases.