Different treatments of terrestrial snail Eobania vermiculata powder used to study its effects on mulberry silkworm, Bombyx mori L. traits. Two varieties of mulberry silkworm imported hybrid and local race were chosen. Mulberry plant of Morus alba var Koukuso-27 selected for feeding silkworm. Traits of fifth duration (days), total larvae duration (days), mortality (%), number of cocoon per liter,cocooning percentage, pupation ratio, fecundity (No.), cocoon weight (g), cocoon shell weight (g),pupal weight (g), cocoon shell ratio (%) and silk productivity (cg/days) were put under investigation. Results revealed that, using snails' powder (treatments of A and B) were better than other treatments. So that, using snail powder are recommended for enhance silkworm rearing.