Aim To study the relationship between sperm acrosin activity and sperm quality.Methods This retrospective study included 12 fertility volunteers and 29 infertility patients.Conventional sperm analysis parameters including sperm concentration,motility rate(a+b %)and percentage of morphology normal sperm were assessed respectively with CAS according to WHO standards.Acrosin activity of each samples were examined with a simple 3-step assay.Results There were positive correlations between acrosin activity and s...