1.What is spitting up? Spitting up is a common phenomenon in newborns. Spitting up can be caused by improper feeding or by various diseases. 2. What is the difference between vomiting and overflowing milk? Vomiting is a complex series of excited reflexes involving neuromuscles, while milk spillage is simply a physical principle that causes milk in the stomach to flow back into the mouth and corners of the mouth through the esophagus (infants have a loose spray door, and milk in the stomach spills out passively when they are in an improper position and the stomach is under pressure), which is not true vomiting. 3.Why does the baby vomit? For newborns with healthy appearance, too frequent feeding, too much feeding, improper milk recipe change or concentration, too fast and too urgent feeding, improper milk temperature, swallowing too much air, etc. may lead to vomiting. If an infant is vomiting severely or has other abnormalities at the same time, the possibility of disease should be considered and a doctor should be consulted promptly. Vomiting in older infants may be related to infections, intestinal diseases, etc. 4. The best way to solve vomiting is to help your baby burp, and the specific techniques are as follows: (1) Try to pick up your baby and feed him/her, so that the baby’s body is tilted at about 45 degrees. (2) Don’t change the holding position immediately after feeding and let your baby burp, as this will not easily cause spitting up. (3) For babies with pacifiers: Be sure to choose the most suitable pacifier hole. Too small is easy to inhale air; too large is easy to choke and cause violent coughing, both of which may cause spitting up. (4) If you are feeding lying down, don’t let your baby lie on his back immediately after feeding, but lie on his side for a while and then change to lying on his back.