Different cries of babies represent different physiological needs of babies, including hunger cries, pre-poo cries, wetting cries, fearful cries, etc.; it is important to listen to and understand babies’ cries during the stage when babies cannot speak. 1. Hunger cries: this cry is small to large, not urgent, parents touch the child’s face with their hands, the baby will have a sucking action, once feeding, the baby will stop crying. 2. Pre-poop cry: the cry is relatively low, increased bowel movements before the stool, the baby feels uncomfortable, will cry. 3. wetting cry: mostly cry when waking up, when the baby changed to a new diaper, stop crying. 4. Fearful crying: sudden onset of crying, ear-piercing. Mostly at night, at this time to hold the child, eliminate the child’s fear. The child’s crying for many reasons, parents in ordinary life should be more interactive observation with the baby, gradually understand the baby’s different demands, if the child cries for a long time, accompanied by a poor mental state, we should go to the hospital pediatrics in a timely manner to clarify the cause, and active treatment.