There are many insect-killed active substances in Melianceae plant, which can be made into pesticide. Those insect-killed active substances is promising to be developed as pesticide, owning to the advantages of effectively killing injurants instead of non-target critters, being easy to decompose without polluting environment and breaking ecology balance. To develop the inartificial ecotypic pesticides, the dissertation focuses on the research of extraction and separation of the active substance...