ABSTRACT
Objective To study the relationship between the semen quality and age in infertile men in Qingyuan.Methods 727 cases of infertile men from Reproductive Medicine Center outpatient were enrolled and divided into 5 groups:≤ 25,> 25 - 30,>30-35,>35-40,>40 age groups.The semen characteristics were carried out by calculator assistance sperm analysis(CASA) technique and Diff-Quick staining method.Results The sperm density of >30 -35 age group was the highest,but there was no significantly difference from other groups(P >0.05).Semen analysis showed that the rates of PR,PR+NP and survival sperm were on downward trends with the increase of age,but not statistically significant(P >0.05).38.19% of >25 -30 age group reached WHO′s semen parameters standard,which was the highest proportion among 5 groups.And the proportion in >40 age group was the lowest,which counted for 27.42%.Conclusion The semen quality shows a down trend with the increase of age,however,the infertility could occur in the reproductive men at any stage.