The use of the guide instrument, playing painless injection can be in the process of pregnant women in labor to relieve pain, to help birth, which guide instrument analgesic effect is weaker than the painless injection, but the use of the guide instrument of the side effects are less; and play painless injection analgesic effect is stronger than the guide instrument, but it has more side effects. If the economic condition permits, you can choose to use it with better effect.1. Guided instrument: that is, the guided instrument for labor analgesia, using the principle of electromagnetic wave, through the hand of the peripheral nerves and lumbosacral nerves for electric current stimulation, to achieve the effect of relieving the pain, more suitable for women who have back pain after the onset of labor and delivery. Guided instrument is green pain relief, relative to painless labor, there is no side effect on the mother and fetus, but the pain relief effect is worse; 2, painless needle: some women use guided instrument, there is no obvious pain relief effect, such women are more suitable for labor after the use of painless needle. After the use of painless injection, it can make the woman relax the pelvic muscles and speed up the dilatation of the uterine opening in labor, so as to achieve the effect of reducing labor pain. However, painless injection may cause pregnant women to experience symptoms such as nausea, vomiting and allergy, in addition, it may also lead to adverse consequences such as postpartum hemorrhage. Therefore, when pregnant women are in labor, they need to choose the appropriate mode of delivery for themselves according to their own conditions and under the guidance of their doctors. Regardless of the method of delivery, the mother should pay strict attention to the contraindications after delivery. Eat a light diet with plenty of warm fruits and vegetables to replenish the nutrients needed by the mother and the fetus, and get out of bed appropriately to help the body recover.