脑梗塞是我国人群中发病率较高的疾病之一。近年来脑梗塞有发病率上升及发病年龄年轻化的趋势[1]，而治疗脑梗塞的各种药物发展较快，东菱精纯克栓酶（DF—B21，简称东菱克栓酶）是一种新型强力单成分溶血栓改善微循环治疗剂[2]，用于脑梗塞早期，收效快、疗程短、付作用少，我 Cerebral infarction is one of the most common diseases in our population. In recent years, the incidence of cerebral infarction and the rise of the incidence of younger age trend [1], and the development of various drugs for the treatment of cerebral infarction developed rapidly, Dong Ling Jing Keke pure enzyme (DF-B21, referred to as Ling bolt) Is a new powerful single-component thrombolytic agents to improve microcirculation [2], for the early stage of cerebral infarction, fast, short course, pay less, I