The increase in estrogen and lactogen secreted by the placenta after pregnancy leads to a decrease in the elasticity of tendons and muscles, a decrease in the tension of the ligaments near the finger joints, and joint laxity, resulting in finger joint pain, which can be relieved when the hormone level returns to normal after delivery. In late pregnancy, the pregnant woman’s whole body volume load is heavier, and local edema of the finger joints will occur, causing finger joint pain.