肺为含气器官，固定液难以渗透。目前采用的气管灌注固定法虽然在一定程度上克服了传统的浸泡固定法、血管全身灌注固定法导致的肺泡萎陷、肺组织结构不清等缺点，但仍存在肺淤血和肺泡腔红细胞污染的弊端［１，２］。作者经过反复实验发现先结扎气管后迅速断头放血，再行... The lungs are gas-containing organs and the fixation fluid is hard to penetrate. The current tracheal perfusion fixation method to overcome the traditional immersion fixation method, vascular perfusion fixation caused by alveolar collapse, lung tissue structure and other shortcomings, but there are still pulmonary congestion and alveolar erythrocyte contamination Disadvantages [1,2]. After repeated experiments found that the first ligation of the trachea rapidly decapitated bleeding, and then ...