通过对小鼠热板法及扭体法镇痛实验，证实延生膏具有非常显著的镇痛作用，作用强度随剂量增大而增强；延生膏还具有抗炎作用，能显著抑制小鼠耳廓炎症及腹腔毛细血管通透性。毒理实验证明：延生膏与阳性对照药２，４二硝基氯苯比较，无皮肤过敏反应。 Through analgesic experiments with mouse hot plate method and writhing method, it was confirmed that Yansheng cream has a very significant analgesic effect, and the effect strength increases with increasing dose; Yansheng cream also has anti-inflammatory effects and can significantly inhibit mouse auricles Inflammation and abdominal capillary permeability. Toxicology experiments show that Yansheng cream has no skin allergic reaction compared with the positive control drug 2,4 dinitrochlorobenzene.