To eliminate dispersion of dioxins from a disassembling place when a small incinerator contaminated with dioxins is disassembled and to achieve harmlessness by adsorbing the dioxins onto superactivated carbon and solidifying contaminants such as body rubbish.

In this integrated engineering method for disassembling, the small incinerator contaminated with dioxins is wrapped in a sealing type rubber sheet and then is safely disassembled without leaking the dioxins outside. The dioxins which come out when disassembling is adsorbed by the superactivated carbon and contaminants such as body rubbish are kneaded with a special solidification agent or cement to solidify and to achieve harmlessness.