The causes of rheumatism mainly include the following four aspects. First, the incidence of rheumatism has a certain relationship with estrogen, so we can see it in clinical practice. The majority of patients with rheumatism are female patients, while male patients rarely get sick, and male patients are generally mild rheumatism. Second, the incidence of rheumatism has a certain relationship with the environment. Living in a dark and humid environment for a long time or being exposed to ultraviolet light for a long time may induce the onset of rheumatism. Third, the incidence of rheumatism is also closely related to infection. Some EB virus infection and hepatitis C infection may induce the onset of rheumatic diseases. Fourth, the incidence of rheumatism is also related to heredity. Clinically, we can see that if there is a family history of rheumatism, the probability of getting rheumatism is many times higher than that of normal people.