We present some results of the chronic prostatites and urethrites treatment with the help of low-intensity radiation of a semiconductor laser emitting 5-10 mW mean power at two wavelengths, λ = 0.65 and 0.85 mm. We have found that the transdermic irradiation of projected zones of the affected organs decreases the terms of treatment of chronic prostatites and urethrites by 1.5-2 times and increases the remission periods from six months up to 1.5 years.