Determination of infertility cause and the quality of sperms in semen are the most important factors when we want to choose the suitable method of therapy of assisted reproduction techniques, which has been proven to be the most effective method today in the treatment of many cases of male infertility, and it allows to choose the best sperm for Intracytoplasmic sperm injection technique (ICSI). In our study we tried to find a relationship between one of the semen parameters with the other basic parameters, we studied the concentration motility and morphology of sperms of 23 infertile men with oligozoospermia, and 5 control cases for fertile men.