We have recently encountered several cases of children with violent crying. First of all, it is necessary to exclude gastrointestinal medical and surgical diseases, infectious and immune encephalitis, metabolic diseases, epilepsy with predominantly psychiatric symptoms, and arrhythmic seizures. Therefore, according to the condition, it is necessary to make a thorough inquiry and focus on the following tests: gastrointestinal ultrasound, cranial MRI, urine screening, immune antibody test, ambulatory EEG, and ambulatory ECG. It is also necessary to exclude the influence of external temperature, moderation, foreign body friction, hunger and thirst, fever, etc. In conclusion: distinguish physiological and pathological diseases. Physiological correction, pathological active investigation of the cause.