Calendula officinalis injection is a commonly used proprietary Chinese medicine in clinical practice, and the active ingredient is calendula officinalis. Calendulin is a flavonoid active ingredient extracted from the whole plant of Calendula officinalis on the Yunnan-Guizhou Plateau. Calendulin refined injection has the effects of anticoagulant, antithrombotic, improving hemodynamics, improving microcirculation, and increasing cerebral blood flow. Not only that, calendulin injection also has the effect of anti-myocardial ischemia, improve the body’s ability to tolerate hypoxia and so on. In the clinical application, we can see the effect of calendula flower injection, which has obvious cerebral vascular expansion, can reduce cerebral vascular resistance, increase cerebral blood flow, improve the microcirculation of the nervous system, and has a certain anti-platelet aggregation effect. Therefore, Lamprophyllin Injection can treat ischemic cerebrovascular diseases, such as cerebral thrombosis, acute cerebral infarction and so on.