[Objective] The research aimed to investigate the influences of each factor in the combination of Ca（ClO）2 and O3 on removing carbendazim residues from kumquat. [Method] By using Box-Behnken response surface methodology （RSM）, the effects of initial concentration of carbendazim, soaked time of Ca（ClO）2 solution, soaked time of ozone water and Ca（ClO）2 concentration on removing carbendazim residues from kumquat were studied. [Result] In the test range, the effects of each factor on removing carbendazim residues from kumquat were soaked time of ozone water, soaked time of Ca（ClO）2 solution, initial residual amount of carbendazim and concentration of Ca（ClO）2 solution in turn. By fitting the experimental result, the quadratic polynomial model of relationship between residual amount of carbendazim and the above each factor was obtained. The verified experimental result showed that the model had high precision. [Conclusion] The model could be used to guide using the appropriate soaked time of Ca（ClO）2 solution, soaked time of ozone water and Ca（ClO）2 concentration under the certain initial concentration and residue limits of carbendazim, which guaranteed obtaining the expected residue limits of carbendazim.
