A child born with a bad mood throughout pregnancy may be normal or it may have an adverse effect on the child’s cognition and behavior. 1. May be normal: bad mood throughout pregnancy may affect the growth and development of the fetus, but not absolutely, some women give birth to children may be normal. 2. May cause adverse effects: bad mood throughout pregnancy, the child is born in poor mood, easy to cry, digestive disorders, low immunity morbidity is high, more difficult to raise. The mother’s emotional state during pregnancy has a great impact on infants and even adolescents, and a poor emotional state will affect the child’s cognitive, behavioral and emotional development. Therefore, it is recommended that pregnant women should adjust their mindset after pregnancy and try to maintain a pleasant and smooth mood.