本文通过２０具尸体额肌解剖发现，额肌行走到眼轮匝肌深面时分为深浅两部分，浅部肌纤维较多与皱眉肌、眼轮匝肌相交织，深部延续为厚约０．２～１．１ｍｍ，平均０．５６ｍｍ的致密膜状组织，下续于眶隔。根据此解剖特点，我们改良了传统额肌瓣术式，在治疗重度上睑下垂中获得了良好的效果，本文还介绍了用不同额肌瓣术式治疗４１例重度上睑下垂之体会。 In this paper, the body mass dissection of 20 cadaver found that frontal muscle walking to the deep orbicularis oculi muscle is divided into two parts, shallow muscle fibers and frown muscle, orbicularis muscle intertwined, the deep continuation of the thickness of about 0.2 ~ 1.1mm, an average of 0.56mm dense membranous tissue, followed by the orbital. Based on this anatomical feature, we improved the traditional frontal muscle flap technique and achieved good results in the treatment of severe blepharoptosis. We also described the experience of treating 41 cases of severe ptosis with different amount of myometrium.