Endometriosis is a common gynecologic disease and badly affects women's health and daily life. The aim of this study is to develop a Chinese herbal medicine compound essential oil for relieving primary dysmenorrhea. In this study, herbal compound essential oil extracted mainly from Chinese angelica was developed with modern medical technology under the principle of ”traditional Chinese medicine in combination with western medicine”. With the combination of traditional Chinese medicine and aromatherapy, this Chinese angelica essential oil is a kind of functional healthy essential oil and has the functions of easing uterine contraction, improving blood counts and engendering blood.