The causes of hiccups include physiological and pathological, pathological hiccups are mostly caused by central nervous system inflammation, gastroesophageal reflux, congenital heart disease, etc., which need to be timely medical treatment. 1. Physiological factors: infants eating milk too fast, too full, milk powder water temperature is too low, the abdomen is cold and so on may lead to infants always hiccups. Some infants may take medications, such as hormones, antipyretic and analgesic drugs, which may also cause infants to hiccup all the time. 2. Pathological factors: infants with inflammation of the central nervous system, such as infants may suffer from meningitis, epilepsy, etc., will stimulate infants always hiccups symptoms. In addition, gastroesophageal reflux and congenital heart disease may compress the recurrent laryngeal nerve, which may also cause hiccups in infants. Infants always hiccups, excluding the possibility of physiological factors, need to consult a doctor in a timely manner, under the diagnosis and advice of a professional doctor to take reasonable medication, do not take medication or delayed at home, so as not to aggravate the condition.