There is no clear scientific statistic that a normal second birth is more painful than a first birth, but most normal first births are likely to take longer to deliver than normal second births. There is no clear scientific basis for the claim that a second birth with a normal labor is more painful than a first birth. In the case of a normal birth of the first child, there is no previous labor experience, so the uterine muscles and pelvic floor muscles have no memory, and the cervix and vagina are not as loose as in the case of the second child, so due to the uterine contractions, when the fetus is delivered through the birth canal, there may be obvious pain, and the duration of the labor process is significantly longer than that in the case of the second child’s normal birth. To summarize, there is no clear scientific basis for the statement that the second child is more painful than the first child during labor, but most of the first child deliveries are likely to be longer than the second child deliveries.