To provide a heating/drying type garbage treatment apparatus which improves heating/drying efficiency by controlling a crushing capacity by controlling the rotation of rotary blades to change an agitation mode according to the contents of treated materials during heating/drying.

The apparatus has a treatment tank for heating/drying cast garbage, the rotary blades for agitating the treated materials in the treatment tank during heating/drying, a load detector for detecting the rotational load of the rotary blades when the treated materials are agitated, and a control part for adjusting the agitation mode of the rotary blades according to the rotational load detected by the load detector.