Generally speaking, the pain level of contractions is stronger in the second pregnancy than in the first, but there are significant individual differences. Contractions are smooth muscle contractions of the uterus, which are the main sign that a pregnant woman is in labor. Comparatively speaking, the pain of contractions during the labor of a second child is stronger than that of a first child, mainly because during the labor of a second child, the cervix of a pregnant woman is softer and less elastic than during the labor of a first child, so the intensity of contractions will increase accordingly, which will lead to an increase in the degree of pain. However, when a pregnant woman gives birth to her second child, her physical condition, psychological state and ability to tolerate pain may change compared with that of her first child, so the pain of contractions felt during the birth of her second child may not necessarily be stronger than that of her first child, and the specific situation varies from person to person, and no generalization can be made. Mothers should have regular check-ups after delivery to ensure that their bodies are recovering well, and should seek medical advice if they feel unwell.