The main ingredient of pancreatic kininogenase enteric-coated tablets is pancreatic kininogenase, which has the effect of vasodilating and improving microcirculation, and it is a class of vasodilator drugs, commonly used in the diseases that present microcirculation disorders. Pancreatic kininogenase is often extracted from pig’s pancreas, the main effect is to dilate blood vessels, improve microcirculation, the secondary pharmacological effect is to activate fibrinolytic enzyme, reduce blood viscosity, activate phospholipase A ₂, but also for the prevention of thrombosis and so on. Pancreatic kininogenase enteric coated tablets can be clinically used for diabetic nephropathy, peripheral neuropathy, retinopathy, fundopathy and ischemic cerebrovascular disease and other circulatory disorders, but also can be used for the adjuvant treatment of hypertension. However, there are occasional cases of rash, skin itching and stomach upset during the administration of this drug, which can disappear after stopping the drug, while the drug is contraindicated in the acute phase of cerebral hemorrhage and other bleeding disorders. This drug is a prescription drug, must be used reasonably under the guidance of a doctor, do not self-medication.