Based on piezoelectric effects of rocks and minerals, this paper has caclu-lated piezoelectric fields produced by piezoelectric bodies in the form of slen-der rod and thin plate under the action of elastic wave as well as theirdistribution regularity, and derived a theoretical calculation formula for thethin-plate piezoelectric body. These outcomes are of some significance in thestudy of spatial distribution regulariry of piezoelectric fie1ds of rocks andores and the interpretation of piezoelectric data.