大黄为一常用中药，具有荡涤肠胃实热、消除燥结积滞、清热解毒、抗菌消炎等多种作用。大黄入汤药时的煎煮方法不同，其作用也不一样，在有些医院中，有些含有大黄的处方没有注明其煎煮方法是另包、先煎或后下，以致影响效果。生大黄在煎煮过程中，其泻下作用最强的番泻苷Ａ易? Rhubarb is a commonly used traditional Chinese medicine, which has a variety of effects, such as cleaning up the heat of the stomach, eliminating the dryness of stagnation, clearing away heat and detoxifying, antibacterial and anti-inflammatory. The decoction method of rhubarb into the decoction is different, and its role is not the same. In some hospitals, some prescriptions containing rhubarb do not indicate that the decoction method is another package, simmering or post-consumption, and thus affects the effect. When Rhubarb is decocted, the diarrhea which has the strongest diarrhea effect is easy to use?