The decision to have painless labor is mainly based on the individual pregnant woman’s pain tolerance level and the length of the labor. Some pregnant women have a strong pain tolerance and can choose not to have painless labor; some pregnant women have a poor pain tolerance and are better off with painless labor. 1. Pain tolerance level: some pregnant women have a strong pain tolerance level, within the tolerable range, then you can choose not to play pain-free; while some pregnant women have a weaker pain tolerance ability, pregnant women feel unable to bear, then you can choose to play pain-free. 2. Length of labor: some pregnant women have shorter labor, generally can not play painless. Some pregnant women, especially primigravid women, the labor process is relatively long, physical exertion is greater, then try to choose to play painless, is conducive to a smooth delivery. Whether or not to play painless, it is recommended that patients communicate with the attending doctor in advance, the doctor will be based on the individual physical condition of the pregnant woman as well as the actual situation, choose the most suitable program, to ensure that the pregnant woman can have a smooth delivery.