本文对19只成熟雌性福建恒河猴子宫内膜组织进行光镜与电镜观察,其中药环组实验猴采用甲地孕酮硅橡胶阴道避孕环(下称甲硅环),分高、低剂量组,设空环对照组。观察结果表明,药环组猴子宫内膜多有明显的萎缩,以高剂量组为著。该变化不利于孕卵着床。本研究提示,剂量适当的甲硅环可能是一种有效而方便的避孕方法。 In this paper, 19 mature female Fujian Rhesus monkey endometrial tissue was observed by light and electron microscopy, the experimental group of drug-loop monkey with gemcitabine silicone rubber vaginal contraceptive ring (hereinafter referred to as silicon ring), sub-high and low doses Group, set empty control group. Observations show that the drug group of monkey endometrium more than obvious atrophy to high-dose group. This change is not conducive to pregnancy egg implantation. This study suggests that a suitable dose of silicon ring may be an effective and convenient method of contraception.