1. An animal treatment system comprising: a dismembering system for amputating the carcasses of animals; an incineration system for preheating and incinerating dismembered solids; a sewage water treatment system for heating and evaporating liquids including hemoid liquids and sewage water generated from said dismembering system; and a waste gas treatment system for burning the resulting gas passed over from said incineration system, such that the waste gas being disinfected and purified through burning prior to being exhausted; wherein said dismembering system is automatically capable of separating the solids from the liquids, thus improving incineration efficiency, and recycling the waste water by said sewage water treatment system for reuse, while said waste gas treatment system turns the waste gas into non-toxic gas through further incineration for preventing the waste water or waste gas from polluting the air in the surrounding environment.