Duchenne进行性肌营养不良(DMD)世界各地都存在,并非少见,欧美各国和日本的男子中发生率为13～33/10万,平均21×10-5,病肌的光镜结构改变已清楚,而超微结构的研究历史不长,认识肤浅。现将我们近年来观察的6例报告于下,并对结构变化的机理进行扼要的探讨。资料和方法临床资料:全部男性。年龄5～14岁, Duchenne muscular dystrophy (DMD) exist all over the world, not uncommon, the incidence of men and women in Europe and the United States and Japan was 13 to 33 / 100,000, an average of 21 × 10-5, the light microscope structure changes of the diseased muscle is clear , While the research on ultrastructure has not long history and knows superficiality. Now we observed 6 cases reported in recent years, and the mechanism of structural changes briefly discussed. Materials and Methods Clinical data: All men. Age 5 to 14 years old,