When women have back pain when it rains, this condition is mainly due to the fact that the muscles of the lower back and the soft tissues around it get cold when it rains. Because the environment is low after the rain, if you do not add clothes to keep warm in time, it may lead to cold. After the cold, the muscle tissue will become more tense, blood circulation will also decline, the local metabolites such as lactic acid and inflammation will gradually accumulate and increase, which will easily lead to painful symptoms in the peripheral nerves of the waist. If the waist itself has lumbar muscle strain, lumbar disc herniation, lumbar spine osteophytes and calcification and so on, it is very easy to form a chronic sterile inflammatory lesion. When the weather is warm, the blood circulation is better and the metabolites produced can be metabolized effectively. But when it rains, muscle tissue becomes tense and blood circulation decreases, leading to the gradual accumulation and increase of chronic sterile inflammation in the local area, which will stimulate the peripheral nerves and cause pain in the lower back.