Review question / Objective: By 3 to 4 months of age, infants can keep their necks upright and look into both eyes horizontally. But infants with CMT have a wry neck also known as a twisted neck. Complementary therapies have been commonly used to treat CMT, such as tuina, acupuncture, herbal medicine. Among them, external application of herbal medicine is non-surgical and non-invasive inventions so it can be used widely in East Asia. This review aims to evaluate any form of external application of herbal medicines in CMT, such as cream, oil, extract, form of patch, etc. Information sources: We will electronically search the following database 4 English databases(MEDLINE, PubMed, EMBASE, the Cochrane Central Register of Controlled Trials), 3 Chinese databases(China National Knowledge Infrastructure(CNKI), Chinese Scientific Journal Database(VIP), Wan Fang Database), 4 Korean medical databases(Oriental Medicine Advanced Searching Integrated System(OASIS), Korean Studies Information Service System(KISS), National Digital Science Links(NDSL), Research Information Sharing Service(RISS)) from their founding date to June 2022, without any language restrictions.