Studies meeting the following criteria were included: (a) patients: adults (age>18 years old) with hypertension; (b) intervention: auricular therapy which includes acupressure, acupuncture, electroacupuncture, laser acupuncture, moxibustion, and bloodletting in the auricle; (c) comparison: sham auricular therapy, ADs or no intervention; (d) outcomes: blood pressure (BP) before and after treatment, magnitude of BP change between baseline and post-intervention and the efficacy rate; (e) study design: randomized controlled trial (RCT). The exclusion criteria were as follows: (a) patients with comorbidities and complications of hypertension; (b) trials comparing different methods of auricular therapy