构叶为桑科植物构树Broussonetia papyrifera(L)vent.的叶。构树别名楮树、沙纸树、谷木、谷浆树、谷桑等。构叶性味甘凉,无毒。功用主治:凉血,利水。治通身水肿;治小儿赤白痢;治吐血、血崩、外伤出血等。其有效成分现知者有黄酮甙、酚类、有机酸、鞣质。关于药理作用则尚未见有研究报告,为此我们对构叶的药理效应作了初步探索,现将结果报告如下: The leaf is the leaf of the Broussonetia papyrifera (L) vent. Trees are nicknamed banyan tree, sandpaper tree, valley wood, grain tree, valley mulberry and so on. The leafy texture is cool and non-toxic. Indications: cooling blood, benefit water. Treatment of body edema; treatment of children Chibai vasospasm; governance vomiting blood, blood clotting, traumatic bleeding. Its active ingredients are known as flavonoids, phenols, organic acids, and tannins. There is no research report on the pharmacological effects. For this purpose, we have made a preliminary exploration of the pharmacological effects of the leaves. Now we report the results as follows: