Whether cancer patients can get pregnant or not depends on the physical and mental recovery status of cancer patients after anti-cancer treatment on the one hand and the stability of the cancer disease on the other hand. Roughly speaking, there are two types of cases: 1. Pregnancy is possible: for early stage cancer patients, after radical surgery and post-operative adjuvant chemotherapy, if there is no recurrence or progression for 3 years, and if the patient has recovered well physically and mentally, pregnancy is generally possible; 2. the chance of radical surgical resection has usually been lost. Chemotherapy and targeted therapy are needed to maintain the stability of the disease, but it is difficult to achieve a complete cure. For this group of patients, they may face the possibility of cancer recurrence or spread at any time, and pregnancy is not recommended to avoid interfering with the normal treatment of cancer due to pregnancy. If you get pregnant when you are in the recovery stage of cancer, you need to strengthen the examination of pregnancy throughout the pregnancy, especially for cancer patients who have received chemotherapy, you should consider the possibility of fetal malformation caused by chemotherapy. Promptly conduct appropriate maternity examinations for pregnant women and check the amniotic fluid and chromosomes to ensure the health of the fetus. During the pregnancy of cancer patients, the health of mother and child should be closely observed and regular review of cancer should be strengthened without affecting the development of the fetus.