Artificial insemination with donor sperm(AID) or husband sperm(AIH) has been a major form of treatment for the infertile couples with severe male factors. The conception rate in oligoasthenoteratozoospermia is very low. Therefore the aim of this study was to examine those factors associated with improved success rate. The results are obtained as the follows; 1. The husband semenalysis(n=639) revealed normal findings in 32.2%. The abnormal findings included the oligospermia(18.5%), oligoasthenospermia(20.7%), oligoasthenotetatozoospermia(8.5%) and azoospermia(20.1 %). 2. The causes of abnormal semenalysis are idiopathic(most common), varicocele, congenital anomalies, vaso-vasostomy, etc.. 3. The semen washing to improve sperm motility and concentration was effective in case of over 20 ${ imes}lO^6$/ml sperm count, but there was no significant improvement in case of be low 10-5${ imes}lO^6$/ml sperm count. 4. The improvement of motility after cryopreservation depended on the initial sperm concentration. 5. The pregnancy rates following AIH are higher in normospermia than oligospermia.