Using diatomaceous earth and yellow soil as pesticide carriers,19 insecticides were used to control Lixus subtilis Boheman of Chenopodium quinoa in laboratory.The results showed that 40%chlorpyrifos EC and 40%phoxim EC showed the quick-acting prop-erty and sustained performance,and the control effects reached 100%after 7 days,which was recommended for production.Using di-atomite as the carrier,the control effects of 5%acetamiprid EC,3.2%beta-cypermethrin·emamectin benzoate ME,5%emamectin benzoate SC and 20%dinotefuran soluble granule were significantly improved,and the control effects were 100.0%,100.0%,73.3%and 95.8%,respectively,after 7 days of administration,which could effectively control Lixus subtilis Boheman of Chenopodium qui-noa,and it was recommended to use the mixed application of insecticide and diatomaceous earth in production.