Mildly depressed mothers gradually improve within 3-6 months. Mothers with severe depression, which has a longer course, need systematic evaluation and treatment, and specific analysis of specific problems; if not detected, treated and medicated in time, they may become patients with lifelong psychological disorders. The incidence of postpartum depression is 10%-20%, which is caused by rapid changes in hormone levels in the body and violent conflicts in childcare families. Mild depression gradually improves within 3-6 months as the division of childcare chores becomes clearer and more skilled.