Objective: To explore the effects of acupuncture at acupoits on heart rate variability (HRV) in patients with chronic stable angina pectoris (CSAP). Methods: By multi-center, randomized and controlled method, 148 patients with CSAP who are meeting the inclusion criteria were divided into 4 groups by the central stochastic system: point selection along meridians group (37 cases, group A), point selection on other meridians group (37 cases, group B), non-acupoint group (38 cases, group C) and waiting list group (36 cases, group D). In group A, patients were received acupuncture on bilateral Neig...