1. Reasons for poor sleep in infants There are many reasons for poor sleep in infants, which may be physiological factors or environmental factors. Physiologically, newborns\’ sleep cycles are relatively short and they wake up easily. In addition, if babies feel uncomfortable or hungry, it will also affect their sleep quality. In terms of environment, if the environment where the baby is located is too noisy or the light is too bright, it will also make it difficult for them to fall asleep. 2. How to improve your baby’s sleep quality 1. Establish a regular schedule. Establishing a regular schedule can help your baby develop a good sleep pattern.