During pregnancy, there will be significant changes in endogenous hormones level, and pituitary tissues are susceptible to these changes. For women with pituitary tumor, changes in pituitary hormones during pregnancy will not only increase the risk of tumor growth, but also affect the health status of them and their fetuses. Different treatments or interventions during pregnancy can also affect the natural course of pregnancy in patients with pituitary tumors. The specificity of pregnancy status makes the diagnosis of pituitary tumors during pregnancy challenging, which leads to an increase in adverse pregnancy outcomes secondary to abnormal pituitary hormone levels such as prolactin, growth hormone, cortisol, etc.. Therefore, the diagnosis, treatments and follow-up of pituitary tumors during pregnancy are very important. This article focuses on analyzing the pregnancy characteristics and precautions of patients with various types of pituitary tumors, in order to provide guidance for the individualized management of such patients during pregnancy.