Ten-month-old babies cry at night for a variety of reasons, including environmental changes, hunger, and illness. 1. Environmental changes: If there is a recent change in the sleeping environment or a change in the person accompanying the baby, it may lead to the baby’s insecurity and inability to adapt to the environment and crying at night. 2. Hunger: If the amount of milk before bedtime is reduced or the frequency of breastfeeding is reduced, it may lead to hunger at night, thus leading to crying. 3. Disease: If your baby has bloating and diarrhea at the same time, you may consider the presence of gastrointestinal diseases, such as dyspepsia, which may cause crying at night and make it difficult to appease. Repeated crying at night may also be related to other causes, and it is recommended that you seek medical attention to further clarify the cause.