This study was performed to explore novel and valuable uses of insect resources, important subjects of the natural compound used in bio-industries. The whole bodies of two crickets, Grylius bimaculatus and Teleogryllus emma, selected from medicinal insect species, were carefully ground and treated with 80% EtOH. The insect extracts were solubilized and separated by hexane, butanol, and D.W according to their pola,rities. Three types of extracts, a D.W fraction (G1) and a boiling extract (G2) of an introduced cricket, G. bimaculatus, and a D.W fraction (Tl) of a Korean local cricket, T. emma, were prepared to assay immune stimulating activity of cricket originated compounds. The all of three treated cricket extracts showed to increase IL-4, IFN -${gamma}$, and TNF-$alpha$. Among those extract, extract G2, boiled extract from G. bimaculatus, was the best immune-enhancing fraction. The results of this study could be fundamental information for further works to use insects as natural resources having plenty of potentials and varieties.