Meraz breathing method, also known as psychological preventive birth preparation method, includes steps such as chest breathing, hip light breathing, gasping breathing, breathing exercises, pushing with force: 1. Chest breathing method: use slow chest breathing at the beginning of labor, take a deep breath in through the nose, start inhaling and exhaling with uterine contractions, and repeat until the labor pains stop before resuming normal breathing; 2. Hip light breathing method: inhale through the mouth A small mouthful of air, keep breathing lightly, let the amount of air inhaled and exhaled equal, breathing completely with the mouth, keep breathing high in the throat; 3, gasping breathing method: after first expelling the air, take a deep breath, then do 4-6 short exhalations quickly, you can mediate the speed according to the degree of uterine contractions; 4, breathing exercise: in the last stage of the second stage of labor, pregnant women want to force the baby out of the birth canal, but not In the last stage of the second stage of labor, the pregnant woman wants to force the baby out of the birth canal, but cannot do so, so as to avoid vaginal tearing. At the beginning of the labor pain, take a deep breath, followed by a short but strong breath until you don’t want to exert yourself; 5. Push: take a long breath when the cervix is fully open, then hold your breath and force the air in your lungs to press down on your abdomen and completely relax your pelvic muscles. When you need to change the air, keep the original position to exhale, while taking a full breath, continue to hold your breath and push until the baby is delivered. Generally, the training can be started from the 7th month of pregnancy, mainly to exercise the ability of pregnant women to control neuromuscular, master breathing skills and prenatal gymnastics, using breathing to distract and relax the muscles, enhance the confidence of pregnant women and ensure that they have sufficient energy for delivery. It can also relieve the mother’s excessive tension and pain in labor, and promote the smooth delivery of the fetus.