There are direct breastfeeding exclusions, which are broadly categorized as pathological and self-inflicted. If the infant has lactose intolerance, breast milk allergy, etc., it is generally not possible to breastfeed directly. In addition, breastfeeding is not allowed if there is an active infectious disease, serious breast or nipple lesions, long-term medication such as antipsychotics or antitumor drugs that do not recommend breastfeeding, or if the woman herself has a serious underlying disease that prevents her from tolerating breastfeeding. In addition, if a woman does not want to breastfeed for her own reasons and still refuses to do so after persuasion, she can also not breastfeed. Breast milk is rich in nutrients, and the World Health Organization recommends exclusive breastfeeding for six months, which lasts for two years or more, so it is recommended that mothers and their babies breastfeed as much as possible when circumstances permit.