POMC and hyperinsulinemic hypoglycemia, familial, 4: Tongduhuoxue decoction can accelerate the rabbit with CSA of shenduxuyu syndrome artery and basilar artery blood flow velocity, can reduce whole blood and plasma viscosity, improve blood supply of vertebral artery, improve concentration and blood sticky situation, and elevate cyclic adenosine monophosphate (cAMP)/cyclic guanosine monophosphate (cGMP) ratio and plasma adrenocorticotropic hormone (ACTH) content, so as to improve deficiency pathological role.