Positive cytomegalovirus IgM antibody means recent cytomegalovirus infection. It should be seen whether the cytomegalovirus is a recent infection or a recurrent infection, which needs to be determined by cytomegalovirus IgG antibody. If the IgG antibody is also positive, it is a recurrent infection; if the IgG antibody is negative, it is a primary infection. Primary infections are asymptomatic for the vast majority of immunocompetent people, so most are detected only at the time of testing and not through symptoms. If it is detected by symptoms, there are symptoms of the corresponding cytomegalovirus infection, such as fever, which should be treated. In addition, if a pregnant woman is infected with cytomegalovirus, it may affect the fetus, and the fetus should be closely observed for its performance and any malformations, and relevant tests can be performed when it reaches the month to determine whether the child is infected. If in early pregnancy, the option of termination of pregnancy can also be considered.