Positive rubella virus in pregnant women is categorized into two types: IgG positive and IgM positive. Each result represents different meanings and treatments are different, and regular follow-up is sufficient for some pregnant women, but some of them should terminate their pregnancies in time. If a pregnant woman’s rubella virus test result is IgG positive, but IgM result is negative, suggesting that there is no rubella virus in her body, the test result is due to previous infection of rubella virus, no special treatment is needed, regular follow-up is sufficient, and some patients can be positive for life. If the test result of rubella virus is IgG positive and IgM positive, it suggests that there is active replication of rubella virus in the body, and the pregnant woman is in the state of rubella virus infection. If it is a pregnant woman before 20 weeks of pregnancy can lead to fetal eye defects, congenital heart disease, central nervous system lesions, if necessary, should be timely termination of pregnancy; after 20 weeks of pregnancy according to the condition of the pregnant woman and the condition of the fetus to treat the diagnosis and treatment program. It should be noted that the patient’s treatment must be carried out under the guidance of a specialized physician, so as not to delay the condition, resulting in adverse consequences.