Objective To investigate sperm parameters of ejaculates with hyperspermia.Methods One hundred and thirty-three ejaculates with hyperspermia(semen volume >6 ml) were divided into three groups: group A, n=66, semen volume 6.0-6.9 ml;group B, n=63, semen volume >7.0 ml; group C, n=4, semen volume >6.0 ml, no sperm in the ejaculates. Sperm motility, count, and morphology were determined according to the World Health Organization Laboratory Manual(2010).Results Of the 133 ejaculates studied, the largest volume was 10.8 ml. Most samples with hyperspermia had normal conventional sperm parameters. No differences were found on sperm motility and abnormal morphology rate between groups A and B(P>0.05). In addition, no differences were also found on incidences of low motility, low sperm count, high abnormal morphology, and white blood cell(WBC) positivity between groups A and B(P>0.05). However, sperm count in group B was significantly lower than that in group A(P<0.05). Ejaculates in group C had no WBC positivity.Conclusion Hyperspermia could have multiple forms for sperm parameters including good or poor status. Increasing seminal volume could not influence sperm parameters except for sperm count. Objective To investigate sperm parameters of ejaculates with hyperspermia. Methods One hundred and thirty-three ejaculates with hyperspermia (semen volume> 6 ml) were divided into three groups: group A, n = 66, semen volume 6.0-6.9 ml; group B, Sperm motility, count, and morphology were determined according to the World Health Organization Laboratory Manual (2010). n = 63, semen volume> 7.0 ml; group C, n = 4, semen volume> 6.0 ml, no sperm in the ejaculates. Results Of The 133 ejaculates studied, the largest volume was 10.8 ml. Most samples with hyperspermia had normal conventional sperm parameters. No differences were found on sperm motility and abnormal morphology rate between groups A and B (P> 0.05). In addition, no differences were also found on incidences of low motility, low sperm count, high abnormal morphology, and white blood cell (WBC) positivity between groups A and B (P> 0.05). However, sperm count in group B was significantly lower than that in group A (P <0.05). Ejaculates in group C had no WBC positivity.Conclusion Hyperspermia could have multiple forms for sperm parameters including good or poor status. Increasing seminal volume could not influence sperm parameters except for sperm count.