Swollen and hot wrist is a manifestation of redness, swelling, heat and pain, which may be caused by local impact or infection. Wrist swelling hot generally refers to the pathological state of the local tissue congestion, impact and infection will trigger inflammatory congestion, especially in the early inflammatory response, due to inflammatory factors make vasodilatory nerve excitation and vasoactive amine mediator release, so that the dilation of fine arteries and congestion, the local tissues become red and swollen. Due to the increase of blood in the microcirculation of the wrist, resulting in a mild increase in the volume of tissue swelling, local tissue congestion appears bright red skin color, metabolic enhancement of the local temperature, so the red and swollen parts of the hot feeling. If the swelling of the wrist is severe, pain or limitation of movement occurs, it is necessary to consult the hospital for further treatment to avoid delays in the condition.