Breastfeeding mothers are advised not to undergo CT examination because the radiation level of CT is very high compared to X-ray. If a breastfeeding mom has a CT scan, the radiation may enter the child’s body through breast milk and affect the child’s growth and development to varying degrees. Breastfeeding mothers should try to avoid undergoing a CT examination. If the condition requires it, breastfeeding mothers are advised to breastfeed 24 hours after the CT examination, and it is better to drain the milk within 24 hours. Breastfeeding mothers should pay attention to balanced nutrition in their daily life, not only to eat more high-quality proteins, but also to eat fresh vegetables and fruits, so as to meet the baby’s growth and development of various nutrients needed, but also to improve the mother’s own resistance to prevent diseases.