Purpose:To study the expression and functional way of EGF and bFGF in human prostatic tissue.Method:To detect the expression of EGF and bFGF in 6 cases of human normal prostate (NP) and 27 cases of benign prostatic hyperplasia (BPH) specimens using mRNA dot blot, in situ hybridization and immunohistochemistry.Results:There was no expression of EGF mRNA in any of the prostate exmined,weakly immunohistochemical staining of EGF was observed in 2 cases of 6 NP and 5 of 27 BPH sepcimens,there was no statistic difference between NP and BPH (P＞0.05).The total amount of bFGF mRNA in BPH tissue is much than that in NP tissue,aboundant bFGF mRNA was revealed in epithelial cells of 6 cases of NP tissues,but no bFGF;low amount of bFGF was expressed,according with the level of its mRNA both in basal and stromal cells of NP tissues;No signal for bFGF mRNA was found in epithelial cells of BPH tissues but bFGF protein was found on surface of local proliferating epithelial cells.Markedly increased expression of bFGF mRNA and its protein were present in basal and stromal cells of BPH tissues,especially in the region of local proliferating stromal cells.Conclusion:There are no EGF secretory cells in human normal or hyperplastic prostate; overexpression of bFGF in basal and stromal cells of human prostate caused irregular hyperplasia both of stromal elements and glandular epithelium via autocrine and paracrine pathways.