It is mainly because of the following two effects: Firstly, it can benefit kidney energy. From the perspective of Chinese medicine, kidney is the master of reproduction, and the development of female follicles, maturation of eggs, fertilization of eggs, and embryo development are all inseparable from kidney energy as well as kidney yin and kidney yang. Therefore, when a patient suffers from kidney deficiency, there is a risk of pre-miscarriage such as pain in the abdomen, bleeding, or cessation of embryo development. Therefore, from the perspective of Chinese medicine, whenever birth control is carried out, it is mostly based on kidney tonification. The second thing is that the Kidney and Fetus Pill can nourish the spleen, which is the main body of the latter, and can transport food to provide nutrients for the work of other organs, as well as for the growth and development of the human body and the development of the embryo. The spleen is able to transport food to provide nutrients for other organs and for the growth and development of the body and the embryo.