大肠俞穴为人体穴位，归足太阳膀胱经。该穴位于腰部，当第4腰椎棘突下，旁开1.5寸。主治疾病有腹胀、泄泻、便秘、腰痛。
目的探讨大肠俞穴注射灭菌用水用于分娩镇痛的效果及其对母婴的影响。
Objective To examine the analgesic effect of injection of sterile water into acupoint Dachangshu in delivery and its influence on mother and baby.
结论大肠俞穴皮内注射灭菌注射用水用于分娩镇痛，是一种理想的分娩镇痛方法，效果较好且安全。
Conclusion the injection of sterile water into acupoint Dachangshu is effective and safe for the analgesia in delivery.
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