Pregnancy will grow spots may be related to the body hormone level change, ultraviolet radiation, skin care products improper use of reasons. 1. Changes in hormone levels in the body: the increase in the levels of estrogen, chorionic gonadotropin and progesterone in the pregnant woman’s body after pregnancy enhances the function of melanocytes in the skin, leading to melanin deposition, which contributes to the growth of spots after pregnancy. 2. Ultraviolet radiation: If you don’t use sunscreen after pregnancy, and if you spend too much time outdoors in the sun, the ultraviolet radiation will lead to melanin deposition, thus contributing to the growth of spots after pregnancy. 3. Improper use of cosmetics: If the cosmetics used after pregnancy contain metal elements, preservatives and other ingredients that stimulate the skin, it may lead to the phenomenon of skin spots. It is recommended to ensure nutrition during pregnancy while paying attention to a light diet, go out and do a good job of sun protection, you can apply the right amount of special skin care products for pregnant women to protect the skin.