Screaming in 4-month-old babies may be due to physiological factors such as hunger or pathological factors such as vitamin D deficiency. Since babies can’t speak, if there are physiological factors such as hunger, they will express themselves through crying and screaming. Usually, the screaming can be stopped after timely feeding. In addition, if there is vitamin D deficiency, it is easy to cry and scream at night, accompanied by excessive sweating, etc. Vitamin D can be supplemented, such as the use of vitamin D drops, etc. At the same time, calcium deficiency can be accompanied by the phenomenon. Vitamin D supplementation, such as the use of vitamin D drops, can be used. At the same time will be accompanied by calcium deficiency, you can use calcium gluconate. If the baby screaming phenomenon is frequent, go to the hospital in time for treatment, the above drugs should be used in accordance with the doctor’s instructions.