This review identifies the evidence on effectiveness of auricular therapy based on 44 included trials, and presents a rigorous illustration of the findings, according to the protocol we had registered in PROSPERO, an international prospective register of systematic review, which has also been published. Furthermore, the GRADE summary is presented to assess the quality of the evidence for outcomes, which could contribute to increasing the possibility of adding this kind of therapy to the international guideline for preventing and management of hypertension.