Meanwhile, lifestyle changes and non-pharmacological therapies such as auricular therapy are considered complementary and alternative methods for hypertension treatment. Auricular therapy is a kind of method of treating physical and psychosomatic diseases by stimulating specific points of ears,11,12 which includes various ear stimulating methods like acupressure, acupuncture, electroacupuncture, laser acupuncture, moxibustion, and bloodletting via needles, seeds, magnetic stones, lasers, ultrasound, or massage.11,13 Auricular therapy has over 2000 years history of use in China, and Paul Nogier presented the inverted fetus map to describe the holographic theory in 1957,11 which makes it possible to understand the theory of auricular therapy systematically and comprehensively. Since then, auricular therapy has become one of the most popular therapeutic methods in many Western countries.14 The manipulation of auricular therapy is based on the holographic theory, a sort of assumption that information regarding a part of the entire organism could be retrieved from the corresponding point of the ear, so that stimulation to a specific point of ear could ameliorate the function of the corresponding visceral organ or other part of the body.11 Specifically, the earlobe targets the brain while the concha is related to the visceral organs, the scaphoid fossa refers to the upper extremities while the superior and inferior crus target the lower extremities.11 Nogier believed that the underlying mechanism behind the connections between a part of the body and a point of the ear is related to the autonomic nervous system.11 Despite its obscure mechanism, auricular therapy has been a convenient and fundamental method in traditional Chinese medicine used for returning the body to a harmonized, balanced state and relieving many common symptoms such as pain,15–17 fatigue,18 postoperative nausea and vomiting,19 hot flushes after cancer treatments,20 xerostomia in maintenance hemodialysis patients,21 and some disorders like substance abuse,22 obesity,23 anxiety,24 sleep disorders,25 and insomnia,26 so that the World Health Organization (WHO) has recognized it as a promising therapeutic approach for its effectiveness in managing a variety of disorders.27