The fetal reproductive chart introduces the reproductive chart of the five-month-old fetus, which shows the development of the reproductive system of male and female fetuses. During this period, the gender of the fetus has been determined, and the gonads, urogenital system and other organs have been formed, but further regulation and development are still needed. The reproductive system of male fetuses will begin to produce testosterone, and the reproductive system of female fetuses will begin to produce estrogen. These hormones will play a role in subsequent development