Objective To investigate the distribution of alpha 1 adrenergic receptor (α1-AR) in benign prostatic hyperplasia tissues with or without inflammation after transurethral plasmakinetic resection of prostate(PKRP). Methods The prostatic tissues of benign prostatic hyperplasia were collected from 30 patients after PKRP. The distribution of α1-AR was measured by immunohistochemistry using specific monoclonal antibodies of α1-AR subtypes. The inflammatory cell infiltration of prostatic tissues was observed at the same time. Results There were no inflammatory cells in 12 prostatic tissues. There were inflammatory cells in 18 prostatic tissues. The mean optical density (OD) of α1A-AR, α1B-AR and α1D-AR in the benign prostatic hyperplasia tissues was not statistically different between the non-inflammation group and the inflammation group (P > 0.05). Conclusions The content of α1A-AR, α1B-AR and α1D-AR in the benign prostatic hyperplasia tissues with inflammation is not significantly different from that in the benign prostatic hyperplasia tissues without inflammation.