Sweating and teeth grinding in 2 year old babies during sleep can be caused by environmental and psychological factors, as well as vitamin D deficiency and other reasons. If a 2 year old baby is in a state of arousal and is wearing too thick clothes at bedtime, sweating and teeth grinding can occur during sleep. Usually babies do not have other symptoms, and the symptoms will disappear after improving the environment and psychological factors. If the baby is deficient in vitamin D, it will easily lead to elevated neural excitability, which is manifested as irritability, irritability and excessive sweating. It may show sweating and teeth grinding, and in severe cases, it may be accompanied by convulsions and other symptoms. It is necessary to supplement vitamin D and calcium and other drugs in time, and at the same time appropriate more sunshine to promote the absorption of calcium. Note that the above drugs should be used under the guidance of a doctor, avoid unauthorized use of drugs to avoid adverse effects. If the 2-year-old baby sleep sweating teeth grinding symptoms, it is recommended to consult a doctor in time, improve the calcium, phosphorus, vitamin D levels and other related examinations, to clarify the cause of the disease, and follow the doctor’s instructions for targeted treatment.