To provide a method for producing a granule or powder by incorporating a liquid material in a porous substance in which the granule or powder can be mass-produced by using a comparatively simple apparatus and an agitating/mixing technique without making a large equipment investment while performing normal temperature work to produce various effects.

In the method for producing, a wood vinegar granule and a wood vinegar granule powder are obtained by incorporating a liquid material such as the wood vinegar liquid to diatomaceous earth, shell exoskeleton, or starch or others. By the method, local businesses are grown and local industries are developed by utilizing local natural resources.