The experimental results demonstrated that moxibustion on Guanyuan point could promote the hyperplasia of the pituitary and the adrenal gland which showed atrophy in control group. Also, the moxibustion treatment stimulated the secretion of beta-END from the pituitary and the adrenal gland, increased the level of serum beta-END significantly and kept the high level for quite a long time, that was advantageous for beta-END to carry out the immunomodulation. The data further suggested that moxibustion treatment do not cause the instant release but probably constant release of the beta-END.