A child’s crying with milk may be caused by indigestion, mouth ulcers, colds and other diseases, and may also be caused by other diseases such as thrush. 1. Dyspepsia: The onset of dyspepsia is affected by a variety of factors, such as gastrointestinal dyskinesia and visceral sensory hypersensitivity. The child will suffer from postprandial fullness, mid-upper abdominal pain, loss of appetite, insomnia, diarrhea and other symptoms, which will cause the child to cry when drinking milk. 2. Mouth ulcers: the cause of mouth ulcers is not yet clear, and it is considered to be caused by genetic, dietary and other factors. The child will have symptoms such as ulcers in the mouth, redness and swelling around the mouth, pain, irritability, fatigue, low-grade fever, etc., which will also lead to crying when drinking milk. 3. Colds: Colds are mainly caused by bacterial, viral and other pathogenic infections, and children mainly show sneezing, nasal congestion, coughing, and other symptoms such as low-grade fever, sore throat and other symptoms, which will lead to the children’s crying and crying while drinking milk. 4. Other: Thrush, acute pharyngitis and other diseases can also lead to the phenomenon of crying with milk. The child cries when drinking milk, there may be other reasons, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.