Baby dozing and crying a lot, may be affected by the environment, may also be caused by disease and other factors, can be used in general treatment, medication, and even surgical treatment and other methods. 1. Affected by the environment: if the baby sleeps in a hot and dry environment, or the temperature is low, the baby feels uncomfortable will not sleep soundly, sleep will often cry. Now need to improve the environment in time, the temperature should be maintained between 24 to 26 degrees, you can often open the window during the day to ventilate. 2. Hunger: some babies can also lead to crying when they are hungry, in principle, babies within 3 months should be fed on demand, more than 4 months of babies should be fed regularly, such as the baby cried a lot, it is not recommended to feed the night feed, you can observe the follow-up. 3. Disease factors: intussusception, acute appendicitis and other diseases can also cause babies to cry a lot, this situation often have some digestive symptoms such as vomiting, abdominal distension and other manifestations, the need for timely medical treatment. Clinical factors leading to the baby crying a lot of factors, vitamin D deficiency can also lead to similar symptoms, it is recommended that if the baby crying can not be relieved or accompanied by other abnormalities, should consult a doctor in a timely manner, in accordance with the doctor’s instructions to be targeted treatment.