In this research urogenital complications of 300 veterans with the average age of 32.7+_6.5 years were studied for two years( 1995-1996) . They were selected randomly in Kerman province based on having at least one exposure to chemical warfare, six to ten years before the study. The control group was selected among the troops whom were not exposed to chemical warfare and had an average age of 31.8+_6.2 years. The study was performed bases on a physical examination, sperm count, and hormonal tested. In the test group,infertility was 23.3℅ spouse- miscarriage 13.6℅ spermogram abnormality 38.7℅ , decrease in libido 30℅ , sexul importancy 9℅ , and finally premature ejaculation 23.6℅ . In the control group the results were, 1.6℅ ,2.6℅ ,8.3℅ ,6℅ ,0.3℅ and 4.3℅ respectively. All of this data showed a significant difference between the troops whom were exposed to chemical warfare and those whom were not. Newborn abnormalities among chemically exposed troops were 9℅ , while in the control groups was 1℅. Hormonal investigation in the test group showed an increase of FSH in 57.6℅ of cases and LH in 66.3℅ if cases. In 26.6℅ of cases, the spouses of chemically affected troops were suspected to have symptoms their skin, eyes and lungs similar to that of their husbands. The result of this study showed that chemical warfare mainly affects the reproductive and neuroendocrine systems, and gave the highest effect on the testes ( Gonads), and therefore causing abnormalities in spermatogenesis , sexual activity, and probably resulting in mutations in fetus and newborn.