Abstract: Pyrazolecarbaldehyde oximes compound,fenpyroximate, is very good acaricide, and compound (Ⅰ) was discovered in our synthesis program, which has good insecticidal and acaricidal activity, but not good enough compared with fenpyroximate. In order to discover new and more active compounds used as pesticide,compound (Ⅰ) was used as lead and the following compounds (Ⅱ) were designed and synthesized. Their structures were confirmed by IR, ¹HNMR and MS. Their screenings are under progress.