The first thing you need to look at is whether your baby has a calcium deficiency and whether you have supplemented vitamin D. If not, it is recommended that you take vitamin D orally and give calcium supplements, such as pediatric DiQiao granules, and pay attention to more sunshine to promote calcium absorption. The second is that the baby may have tummy discomfort, you can use some pain medication, such as belladonna oral liquid or simethicone oil, etc.; abdomen can be warmed with belly button paste, to play a supplementary therapeutic role; if necessary, you need to go to the hospital to let the doctor check the body to rule out other potential diseases. For example, if there is intussusception or other tummy distension, or if there is an underlying infection, further therapeutic measures can be taken if necessary to allow for targeted treatment.