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The characteristics of quartz in tungsten-molybdenum ore body ( early mineralization stage) and fluorite fluid inclusions in lead-zinc-copper ore body ( late mineralization stage) ��and the research of homogenization temperature and salinity of iron polymetallic deposit in Cuihongshan show that��from the early stages of tungsten- molybdenum mineralization to the late stages of lead-zinc-copper mineralization��the intrusion experienced a sharp drop of temperature and salinity significantly increased process from internal to external contact zones�� The metallogenic fluid of tungsten-molybdenum ore body is magmatic hydrothermal fluids��and the metallogenic process is a single fluid cooling process�� In lead-zinc-copper mineralization stage��the high temperature fluid from magma mixed with the low temperature��high salinity fluid in surrounding strata��which made the fluid temperature dropping and salinity increased��and leading to the depostion of lead��zinc��copper and other minerals�� The δ34S ( ‰) test results of molybdenite and galena show that metallogenic materials of tungsten and molybdenum ore body mainly from the magmatic hydrothermal in internal contact zone; the metallogenic materials of lead-zinc-copper ore body in surrounding strata besides to magmatic hydrothermal origin��still may come from the leaching by rain to sulfur and other metallogenic minerals of sulfate��