The causes of uterine cold are as follows: 1. congenital factors, that is, institutional factors, everyone’s physique is born different, some people are cold bottom physique, there will be this kind of cold performance; 2. acquired causes, such as rain and water, is the external factors, many patients will not be dysmenorrhea, a period of time suddenly appear dysmenorrhea, go deeper into the cause of the disease will have a pre-menstrual rain, clothes Many patients do not have dysmenorrhea before, but suddenly they have dysmenorrhea for a period of time, so if we look into the cause, we will see that the rain before menstruation is soaking wet and the clothes are cold, or we go swimming before menstruation and the water is cold. Internal injury factors, such as eating too cold, will also damage the spleen and stomach Yang Qi, and over time will also be a long-term disease and kidney, injuring the Yang Qi in the kidney. These are some common causes, such as eating cold drinks in the refrigerator in summer, ice-cream without restraint, long-term can certainly lead to the production of deficiency cold, so probably these two aspects to cause. But the important point is that the system, such as the reason, some people are born is on the cold side of the physique, need to correct. Personally, I think the mother is born with nine sons, nine sons are different, it is impossible to require everyone’s physique is exactly the same, as long as this physique state does not cause disease problems, do not need to intervene. For example, some people may have a little bit of dysmenorrhea, a little bit of low menstruation and dark color, but if there is no delay in fertility, there is no need to change it.