Temper may become irritable after pregnancy, and the period of emotional instability is from 4 to 12 weeks of pregnancy. Pregnancy reactions and changes in social roles after pregnancy can easily cause shyness, terror and antipathy in pregnant women. Pregnancy reactions, which bring physical discomfort and fear of childbirth, also make pregnant women still not very willing to accept this little life from the psychological point of view. During this period, pregnant women are very unstable and love to lose their temper. During 16-32 weeks of gestation, the pregnant woman gradually adapts to this period, when she has passed the pregnancy reaction period, her body turns better, and she starts to accept it psychologically. However, because of stress, fear of giving birth to a deformed baby and expectation of the sex of the fetus, increased fantasies, fears may still exist and temper tantrums may still occur. During 32-40 weeks of pregnancy, the period of overload of pregnant women, the rapid development of the fetus, which makes pregnant women overburdened, difficult to move and increased pressure on the thought of delivery. As a result, pregnant women are depressed, anxious and irritable, and their temper will become irritable. During pregnancy, the way to adjust the grumpiness, you can think relaxation, divert attention, regular rest and rest, appropriate for walking, etc.