8 months baby suddenly stopped drinking milk powder, consider is due to the anorexia period, excessive intake of complementary food and other non-disease factors, but may also be due to indigestion, thrush and other disease factors. 1. Non-disease factors: (1) anorexia: infants and young children in the process of growth and development, there will be a “anorexia” as a normal physiological phenomenon, which led to the baby suddenly do not drink milk powder. (2) excessive intake of complementary foods: if the 8 months baby intake of excessive complementary foods, occupy the stomach content volume, can also lead to the baby suddenly do not drink milk powder. 2. Disease factors: (1) dyspepsia: if parents do not feed properly or the abdomen is cold, can trigger dyspepsia, resulting in nausea, vomiting, restlessness and other symptoms, and will appear suddenly do not drink milk powder phenomenon. (2) Thrush: If the bottle or nipple used to feed the baby is not clean or the mother’s breast is not clean, it will easily lead to thrush, and the child will not drink formula because of the pain caused by the stimulation of the lesion by drinking milk, and white milk clot-like dots or flakes can be found on the surface of the mucous membrane of the affected child’s mouth. In addition, there are many other reasons can lead to 8-month-old babies suddenly do not drink milk powder, it is recommended to go to the hospital in a timely manner, to rule out non-disease factors, and then receive treatment as soon as possible.