目的　使用环氧树脂AB胶对最容易损坏的经水平切和冠状切的后半部分颅骨表面进行薄层包埋，使颅骨骨质薄的结构变得坚硬，且其孔、缝、管保存完好。  方法　将48个颅骨标本随机分成8组，每组按照不同时间段逐个浸没于有机玻璃盒的环氧树脂AB胶中，每个浸泡时可看见有气体排出，约1 min左右，没有明显的大气泡产生，即用止血钳夹住较厚的颅骨壁边缘取出颅骨，在有机玻璃盒上方停留一会并轻轻晃动，待颅骨表面流动的胶基本流干后，将颅骨水平切面朝下放置于硅胶板上，静置24 h。 结果    标本透明度高，颅骨壁光滑，可清楚辨认标本结构，易碎部分骨骼受力明显增强，较容易脱落骨骼与颅骨整体连接更加紧密，搅拌充分后60 min内包埋的颅骨标本的各管、孔没有明显堵塞，表面没有出现结块现象。  结论　在室温下，环氧树脂AB胶搅拌充分后60 min以内为适宜的颅骨表面包埋时间。经表面包埋后的颅骨标本较好的解决了在实验教学过程中不易损坏，要求不能触摸的两难问题。

Objective　To make the structure of the skull become hard, make the holes, joints and pipes well preserved by using the epoxy resin AB glue to bury the surface of the posterior skull by horizontal and coronal incision, which was the most easily damaged.　Methods　Forty-eight skull specimens were randomly divided into 8 groups. Each group were immersed individually into the epoxy resin AB glue in the organic glass box at different times. When soaking, there were gas discharging from the inside of the specimen for about 1 min.When there was no obvious large bubble, hemostatic forceps was used to clamp the edge of the thick skull wall to take out the skull, and the skull was held for a while above the plexiglass box and was gently shaken. After the flow of glue on the skull surface was basically dry, the skull was placed horizontally on the silicone plate and left it standing for 24 h.    Results    High transparency of the specimens and smooth skull wall can help to identify clearly the specimen structure. The skeleton stress of the fragile parts significantly enhanced. The skeleton , which was easy to fall off, was more closely connected with the skull. There were no obvious blockage and agglomeration on the surface of embedded skull specimens within 60 min after full stirring.   Conclusions    At room temperature, the appropriate time for skull surface embedding was within 60 min after full mixing of epoxy resin AB glue. The skull specimen after surface embedding  can better solve the dilemmas of not being easily damaged and not being touched in the course of experimental teaching.