Poor sleep during pregnancy may lead to physical discomfort, poor fetal development, mental illness and other bad effects. It is recommended to maintain good work and rest habits and mindset, and psychological counseling can be provided when necessary. 1. Physical discomfort: Frequent poor sleep and poor mental state during pregnancy can cause dizziness, headache, fatigue, weakness and other symptoms. 2. Fetal dysplasia: Poor sleep during pregnancy leads to physical discomfort, and the fetus will also be affected, which may lead to fetal dysplasia, and in severe cases, may lead to miscarriage. 3. Mental illness: poor sleep during pregnancy has a great impact on the mind and can lead to anxiety, depression and other negative emotions. In the long run it may cause depression symptoms and other mental illnesses. Maintaining adequate sleep and a healthy mental state during pregnancy is very important, and families should give more care and understanding. If unhealthy psychology has already appeared, it can be actively treated with psychological counseling.