Painless labor is not really painless, but the pain is reduced by anesthesia drugs, and there are certain conditions for painless labor. Painless labor is labor analgesia, usually using epidural anesthesia, usually in the pregnant woman regular contractions, uterine opening 3cm to the full opening of the uterus, in the second and third stage of labor is often not used, so the process is not completely painless, but only to reduce the pain of the dilatation of the uterine cavity in the first stage of labor. Labor analgesia has certain limitations, such as the patient suffers from blood system diseases, such as thrombocytopenia, coagulation disorders, etc., or the patient’s back trauma, anesthesia drug allergy, etc. generally do not use labor analgesia. Patients need to be assessed by the doctor in conjunction with the progress of labor, the condition of the fetus and the results of various tests before deciding whether or not painless labor can be performed.