It is normal for babies to cry occasionally at night after taking rotavirus vaccine which can be soothed. If the crying is more than that or accompanied by other discomforts, it may be an abnormal phenomenon, and need to consult the doctor in time. After the baby oral rotavirus vaccine, there may be vomiting, diarrhea, crying and other adverse reactions, most of the symptoms are mild, 1 ~ 2 days or so will improve on their own, do not need special treatment, but also a small number of babies may have a low fever, can be relieved on their own. If the baby crying, soothing after crying still can not be relieved, or accompanied by poor mental response, violent vomiting, high fever and other uncomfortable symptoms, may be caused by pathological factors, the need to take the baby to the hospital pediatrics consultation, through the perfect relevant examination, to clarify the cause of the disease to give targeted intervention treatment.