Baby hiccups and spitting up may be caused by physiological factors such as imperfect development and incorrect feeding, as well as intestinal obstruction, hiatal hernia of the esophagus, and other causes such as meningitis. 1. Physiological factors: the general baby swallowing muscle group coordination is poor or vomiting center development is not perfect, gastrointestinal tract peristaltic nerve regulation function is poor, may lead to the baby erbic spitting milk. In addition, when feeding the baby, feeding too much milk or the baby swallowed a lot of air when eating milk, can also lead to the erosion of milk swallowing. These are normal physiological phenomena and do not require treatment. 2. Intestinal obstruction: Intestinal obstruction is considered to be caused by abnormal intestinal dynamics, enteritis, sepsis and other factors. Patients will mainly have abdominal pain, abdominal distension, vomiting, inability to pass gas and defecation and other manifestations. If the patient’s abdominal distension is serious, it will lead to diaphragm uplift, inducing diaphragmatic spasm, and at this time there is induced eructation. Therefore, babies with intestinal obstruction will be manifested as eructation and spitting up. 3. Esophageal hiatal hernia: Esophageal hiatal hernia may be caused by increased intra-abdominal pressure and enlarged esophageal hiatus. Patients may experience vomiting, acid reflux and heartburn. In addition, esophageal hiatal hernia is located in the diaphragm area, which is easy to cause diaphragmatic spasm, which will lead to the patient’s performance of uh-oh. 4. Other: baby hiccups and spitting up milk may also be meningitis, reflux esophagitis and other causes. Baby hiccups and spitting up milk may also have other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.