To stably manufacture a granulated matter with a desired granule diameter irrespective of capacity of a granulating tank in a method for manufacturing the granulated matter by agitating binder and raw material powder together in an agitation granulating device having an agitation blade in the granulating tank.

The agitation blade is agitated while almost constantly maintaining centrifugal acceleration a of an outer side end of the agitation blade calculated from the following formula (1) within a range of 30-110 m/s2. A range of 5-60 minutes is preferable as a time for constantly maintaining the centrifugal acceleration a. Centrifugal acceleration a=r×ω2 (1), wherein r is the rotational radius of the agitation blade (m), and ω is the angular speed (rad/s) of the agitation blade.