Night terrors in children are commonly caused by the following conditions: 1. Vitamin D deficiency rickets. The baby lacks vitamin D and calcium, which results in night terrors, night cries, excessive sweating, occipital baldness, rib cage exostosis and other symptoms, which will be gradually improved after supplementation of vitamin D and calcium, more outdoor activities, sun exposure and reasonable addition of complementary foods. 2. Difficult to raise type of temperament. Each person’s temperament is different, divided into difficult to raise type, intermediate type and easy to raise type. Difficult to raise temperament baby in the process of bringing up more difficult, easy to sleep restlessness, crying and other phenomena, you can go to the hospital for temperament assessment test, to give the necessary early intervention. 3, brain injury syndrome. Most commonly seen in premature babies, hypoxic ischemic encephalopathy and other high-risk factors babies, easily stimulated by external stimuli such as sound, excessive frightening movements, to go to the hospital in a timely manner.