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Objective: To assess the relevance between the non-processed semen parameters and the pregnancy outcome of husband sperm intrauterine insemination(IUI).Methods: A retrospective study was performed on 284 IUI cycles.The non-processed semen parameters were grouped in line with abstinence period (<2days, 2~4days, 5~7days, >7days), viscosity (, high), ph(<7.2, 7.2~7.8), concentration(<15 × 106/ml,15~40 ×106/ml, >40 × 106/ml),percentage of progressive motile sperm(PR<32%, 32%~50%, >50%), and the progressive motile sperm count(TMS< 10 × 106, 10~20 × 106, 20~50 × 106, 50~100 × 106, >100 × 106).The pregnancy rate of IUI was compared between each group of several parameters.Results: Totally, 47 cycles got clinical pregnancy in 284 performed IUI cycles, the pregnancy rate was 16.5%.Though no significant differences were found between each group in several parameters(p>0.05), the clinical pregnancy rates were lower than other groups while abstinence period<2days, the high viscosity, ph<7.2, PR<32%, and TMS< 10 × 106;The pregnancy rate was higher than group(2~4 days) while the abstinence period was 5~7days(p<0.05).Conclusion: No significant correlation of pregnancy rates were found in concentration, ph, and PR of non-processed semen;but more samples needed to be collected to confirm the correlation between pregnancy outcome with abstinence period, viscosity, and TMS of non-processed semen of IUI.