PURPOSE: To obtain a stable bensultap solid preparation mixed with calcium carbonate as an extender.

CONSTITUTION: An agrichemical solid preparation contains 1.0-30.0wt.%, preferably 30-10.0wt.% of bensultap and 60-90.wt.%, preferably 75-85wt.% of calcium carbonate as an extender instead of clay. By using calcium carbonate as the extender, bensultap can be mixed with silafluofen or validamycin A, which can not be stably blended in the case of using clay. The solid preparation can optionally be blended with auxiliary components such as dispersant, spreader, wetting agent, thickening agent, consolidation inhibitor, flocculant, binder and oxidation inhibitor.