Abstract: OBJECTIVE To explore into the etiology of male infertility and provide evidence for clinical treatment.METHOD Based on WHO flow chart,male infertility patients from March 2004 to March 2005 were given diagnosis analysis and various kinds of examination.RESULT Azoospermatism accounted for 10.9%,oligospermatism 21.2%,seminal plasma AsAb positive 7.1%,and ambly-spermatism 52.7%.CONCLUSION Since ambly-spermatism becomes the main cause of male infertility,further research is needed to explore into its etiology and treatment.The occurrence of immune infertility is increasing and attention should be paid to the nasal diseases as its complication.