Red Myrceneol is not recommended for pregnant women. Erythromycetol is a constituent present in spring yellow chrysanthemums, which has good stability and skin compatibility, and is mainly used in cosmetic products for skin protection and skin care. Erythromycetol is effective in relieving allergic skin diseases and has not only anti-inflammatory properties but also antibacterial activity. Red myrceneol as an ingredient is mainly used in skin care cosmetics, which are best avoided by pregnant women during pregnancy when their bodies can be relatively special. During pregnancy, drugs can indirectly affect the fetus by affecting the maternal endocrine and can also directly affect fetal development through the placental barrier. It can affect embryonic differentiation and development, and in severe cases can lead to fetal malformation and dysfunction. Moreover, the effect of drugs on the fetus is closely related to the time of drug use and gestational age. Therefore, it is necessary to avoid the use of drugs that have potential effects on fetal development. Pregnant women during pregnancy, the use of any drug or skin care products containing drug ingredients need to consult a specialist, follow the doctor’s instructions for the use of medication, to avoid blindly using their own and causing adverse consequences.