['To investigate the clinical effects of the combined therapy of the Chinese medicine Compound Xuanju Capsule and vitamin E on sperm chromatin damage in idiopathic oligoasthenospermia.', 'We assigned 50 infertile men with seminal abnormality to a control group (n = 26) and a trial group (n = 24) to receive vitamin E and the combined therapy of Compound Xuanju Capsule plus vitamin E, respectively, both treated for 3 months. Before and after the treatment, we detected semen routine parameters and sperm DNA fragmentation indexes (DFI) by computer aided semen analysis (CASA) and sperm chromatin structure assay (SCSA), and compared them between the two groups.', 'There was no obvious difference between the percentage of progressively motile sperm in the trial group and that in the control group (21.55 +/- 8.68 vs 21.47 +/- 11.53, P > 0.05). The trial group showed a significantly decreased sperm DFI after medication as compared with pre-medication (29.57 +/- 12.19 vs 34.09 +/- 10.32, P < 0.05).'] Does [ Compound Xuanju Capsule combined with vitamin E improve sperm chromatin integrity ]?