Nausea and vomiting is a common but difficult problem in clinic.It can not only lead to a series of complications, but also make medical care more difficult. Among them, postoperative nausea and vomiting is the most common in clinic, and there is a lack of effective treatment.As a convenient, non-invasive, effective, safe and inexpensive treatment, aromatherapy has begun to be used in many aspects of postoperative nausea and vomiting.This article reviews the latest research progress on the correlation between nausea and vomiting and odor, and discusses the feasibility of aromatherapy for nausea and vomiting, so as to provide a new reference for clinical prevention and treatment of nausea and vomiting.