Investigators plan to recruit 428 hypertensive patients. Eligible patients will be randomized to four different groups.ⅰ. the affected meridian acupuncture group (AMA, n=107) will be treated with acupoints on affected meridians.ⅱ.the non-affected meridian acupuncture group (NMA, n=107) will be treated with acupoints on non-affected meridians.ⅲ.invasive sham acupuncture group(ISA, n=107)will be provided with sham acupoints treatment.ⅳ.waiting-list group(WL, n=107)will not be given any intervention.