Commonly used Chinese medicines for pregnancy preparation include Angelica sinensis, Ligusticum chuanxiong, White peony root, Rehmannia glutinosa, etc. These Chinese medicines can regulate the female endocrine system and promote follicle development and ovulation. Among them, Angelica sinensis has the functions of activating blood circulation, removing blood stasis, regulating menstruation and relieving pain. It can increase the thickness of the endometrium and improve