Objective By observing the curative effect of Yangxue Zhiyang Capsule (YZC) on guinea pigs and senile rats, therapeutic effect of YZC for senile pruritus and its mechanism was assessed. Methods Animal models with pruritus induced by exogenous histamine were used to observe the effect of YZC in relieving itching. Senile rat models of blood deficiency induced by acetophenylhydrazine (APH) were applied to measure the effect of YZC on red blood cells (RBC) counting, blood hemoglobin (Hb), plasma estrogen (E2), testosterone (T) and proesterone(PO), sexual organ weight and the amount of sebaceous gland and its secretory function. Results YZC could raise the itching threshold of guinea pigs with pruritus, elevate RBC amount and Hb content, increase E2,T and PO levels, elevate the weight of sexual organs and the number of sebaceous glands, and promote the secretory function of sebaceous glands in rats with blood deficiency. Conclusion YZC has good effect in relieving itching of guinea pigs with pruritus and nourishing blood of rats with blood deficiency by raising the levels of sex hormones, increasing the number of sebaceous glands and stimulating sebaceous gland secretion.