Aimed at the problem of pesticides toxicity to Bombyx mori Linnaeus , the acute toxicity of general pesticides and especial insecticides to Bombyx mori and the safety evaluation were studied ; the effect to growth and development of Bombyx mori dealed with low dose of especial insecticides were studied ; the comparison on toxity selectivity of chlorfenapyr between Bombyx mori and mulberry pestes was studied ; the enzyme activity of different instar of Bombyx mori were determined; the enzyme act...