Coldness in the joints of the legs is mainly due to the presence of inflammation in these joint locations. These inflammatory conditions stimulate the peripheral circulation around the joints, leading to a decrease in circulation. For example, the small arteries contract and the blood supply to the leg joints decreases, which leads to the inability of the warmer blood to be supplied efficiently, resulting in localized coldness; and because the veins also contract, this leads to a further slowing of circulation, resulting in the inability of inflammatory metabolites to be adequately metabolized and accumulation, which leads to further irritation of the blood vessels and the surrounding soft tissues, resulting in contraction. This can lead to further stimulation of the blood vessels and the surrounding soft tissues, resulting in further contraction, which can lead to even more coldness. For this kind of situation, first of all should carry out the local inflammation treatment, find the specific cause of inflammation, and then carry out the symptomatic treatment; can also be used with the application of warm water bag to increase blood circulation, can improve the situation of this kind of coolness, and must pay attention to warmth, absolutely can not be cold.