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Objective: To observe the effect of acupuncture therapy on the function of myocardial contraction insymptomless cardiac failure patients. Methods: A total of 60 cases of symptomless cardiac insufficiency inpatients wererandomly divided into medication and acuptuncture groups, with 30 cases in each group. For patients of acupuncturegroup, Neiguan (PC 6), Ximen (PC 4), Tanzhong (CV 17), Xinshu (BL 15), Jueyinshu (BL 14) and Geshu (BL 17)were punctured, twice daily, with 30 days being a therapeutic course. In medication group, patients were asked totake Capoten 25 mg (t. i. d. ). The left ventricular ejection fraction (LVEF) and its fractional shortening (FS) of the mi-nor axis were used as the indexes for assessing the therapeutic effect end detected by using a color ultrasonic Dopplerapparatus. Results: After one course of treatment, of the each 30 cases of acupuncture and medication groups, 13(43.3%) and 16 (53.3%) had marked improvement, 16 (53.3%) and 14 (46.7%) had improvement, and 1(3.3%) and 0 had no any effect respectively. No significant difference was found between two groups in the therapeu-tic effect. It shows acupuncture therapy can improve myocardial contraction function. Conclusion: Acupuncture has asimilar effect in enhancing the systolic function of the myocardium.