To provide treatment method and treatment apparatus of wastes such as asbestos-containing construction materials or the like by which asbestos-containing construction materials are safely treated at a low cost.

The treatment apparatus of wastes such as asbestos-containing construction materials or the like comprises a loading zone 11 for loading wastes a such as construction materials, a crushing zone 12 continued from the loading zone 11 for crushing the wastes a such as construction materials, and a solidifying zone 13 for accumulating and solidifying the crushed materials a', and is characterized in that a circulation liquid is injected to the respective zones 11, 12, and 13. The treatment method of wastes a such as construction materials is characterized in that the wastes a such as construction materials are crushed in a liquid and a solidifying additive is added to the liquid to obtain volume-reduced asbestos-containing wastes 3, 5.