The baby sleeps at night with a lot of sweat on the back may be caused by high temperature, vitamin D deficiency rickets and other reasons, which can be relieved by lowering the temperature, medication and other ways. 1. High room temperature: it will lead to the phenomenon that babies sweat a lot on their backs when they sleep at night, for example, the quilt cover is too much, the temperature of the room is too high and so on, together with the baby’s metabolism, it can make the baby appear to have a lot of sweat on his back when he sleeps, and the parents can reduce the temperature by reducing the quilt on the child, turning on the air conditioner and so on, in order to minimize the phenomenon that babies sweat a lot on their backs when they sleep. 2. Vitamin D deficiency rickets: it will also make the baby appear the above symptoms, accompanied by night terrors, night crying, irritability and other symptoms. In daily life should be appropriate sunshine, and follow the doctor’s advice to supplement vitamin D and calcium, so as to reduce the baby night sweating. The baby’s back sweat at night may be caused by other reasons, parents are advised to take the baby to the hospital as soon as possible, to clarify the cause of the disease and then targeted treatment. All of the above drugs should be used under the guidance of a doctor, avoid self-medication.