To provide a treatment method for an asbestos-containing waste material, with which the asbestos-containing waste material can be sufficiently detoxified in a short period of time, in which waste liquid after the treatment is effectively used and the waste liquid is reused for a raw material for cement, and with which asbestos in the state of asbestos fiber bundles can be completely, efficiently and sufficiently detoxified in a short period of time without being suppressed by presence of inorganic matters such as cement components highly reactive to acid and contained in the asbestos-containing waste material, particularly.

In the treatment method, the asbestos-containing waste material is treated with a mineral acid solution, then the asbestos in the waste material is detoxified by a detoxifying treatment aqueous solution to which a compound solution containing fluoride is added, obtained treated waste liquid is neutralized with alkaline, and generated precipitates are reused as a cement raw material. Ultrasonic vibrations are given to the mineral acid solution and/or the detoxifying treatment solution.