ABSTRACT Objective To research the value of ultrasound elastography strain ratio assess testicular stiffness in different degrees varicocele patients with normal range of sperm density.Methods Set up case group and contrast. Case group was divided into subclinical varicocele , gradeⅠof the varicocele, grade Ⅱ of the varicocele, grade III of the varicocele.The case group and contrast both have 50 testicles examine by ultrasound elastography and measure the strain ratio between testis’ around and testis’ middle . Comparative analyze strain ratio difference between the case group and the contrast, differences between the groups. Analyze correlation between spermatic vein diameter and strain ratio, strain ratio and sperm density. Results The strain ratio difference between the case group and the contrast, differences between the groups without statistical significance(P>0.05). Negative correlation between spermatic vein diameter and strain ratio（r=-0.459, P=0.001,P<0.05）,positive correlation between strain ratio and sperm density（r=0.649，P=0.000，P<0.05）. Conclusions Strain ratio can be used as a reference index of forecast testicular stiffness and testicular function trends, in varicocele patients with normal range of sperm density.