During the screaming stage, babies make high pitched sounds such as “ee-ya”, which are very loud. During the screaming period, babies start to produce single sounds and gradually produce syllables that become rich. Babies express their emotions during the screaming period. Since the child cannot yet control the vocal ability of his/her vocal cords, he/she expresses his/her happiness, anger, hunger, etc. through screaming. Most children begin the screaming period at 3 to 4 months of age, and it usually lasts about a month. The screaming period is a stage that babies must go through in the process of speaking, during which parents should be patient with their children and talk to them, and play games with them more often. Guide your baby not to develop the habit of screaming when things go wrong, and learn to express their needs through language. As the child grows older, his/her language function will gradually improve. It is recommended that babies in the screaming period should seek prompt medical attention for any discomfort and be treated actively under the guidance of specialized doctors.