Babies waking up all the time and not sleeping soundly may be caused by improper feeding, environmental discomfort, vitamin D deficiency, and so on. 1. Improper feeding: When infants are too hungry or too full, it may lead to waking up and restless sleep. Parents need to pay attention to the infant’s feeding, and after adjustment, the infant’s sleep will usually improve. 2. Environmental discomfort: too noisy environment, too much light, too high or too low temperature may cause infants to wake up and sleep restlessly. Parents need to improve the infant’s sleep environment to ensure the infant’s sleep quality. 3. Vitamin D deficiency: Vitamin D deficiency can easily cause rickets, and infants will have symptoms such as irritability, awakening, night crying and excessive sweating. You can follow the doctor’s advice for vitamin D supplementation to relieve the symptoms of the disease. Infants always wake up and sleep uneasily if there is no improvement and continue to worsen, it is recommended to seek medical advice as soon as possible, in accordance with medical advice.