目的　观察附睾内注射生理盐水的抗生育效果。方法　经输精管向 12只成年家兔双侧附睾内分别注射生理盐水 ( 0 .1mL/kg)。 结果　注射生理盐水后 15～ 2 5 5天 ,实验兔的精子密度、精子存活率和精子活力呈现一由低转高最后至正常的动态变化过程。结论　该方法可能是一种简便、无副作用且具可复性的节育方法 Objective To observe the anti-fertility effect of intra-epididymal injection of saline. Methods 12 adult rabbits were injected with saline (0. 1 mL / kg) into the bilateral epididymis respectively by vas deferens. Results After 15 ~ 25 days after injection of saline, the sperm density, sperm viability and sperm motility of experimental rabbits showed a dynamic process from low to high finally to normal. Conclusion This method may be a simple, no side effects and reproducible method of birth control