BACKGROUNDCitrus leaf miners are a common pest that harms citrus production and quality during citrus planting. During the citrus plant's growth phase, the bisultap formulation was frequently used to boost yield and produce fruit of high quality. Research on citrus's dietary risk assessment for bisultap residues, dissipation, and residues, however, is lacking.RESULTSLC‐MS/MS was used to develop an accurate and sensitive analytical method for derivatizing bisultap into nereistoxin in whole fruit, pulp, and peel. At various levels of addition, the mean recovery of bisultap ranged from 84.64 to 111.09% with a reasonable RSD (< 20%). The half‐lives in Guangxi and Guizhou were 3.96 and 6.03 d, respectively. After 14‐21 d of bisultap application, total residues (bisultap and its metabolite nereistoxin) in the whole fruit ranged between < 0.02‐0.228 mg kg‐1 in four experiment sites. And total residue (bisultap and nereistoxin, expressed by bisultap) in whole fruit was approximately 1.05‐7.23 times that of pulp. The washing process with tap water removed 85.71 to 98.78% of the bisultap residue in the whole fruit. Bisultap's risk assessment value in citrus was 0.16 to 1.28%.CONCLUSIONIn the whole citrus fruit, bisultap degrades rapidly. Bisultap residues primarily accumulate on citrus peels, so washing and peeling citrus may effectively remove bisultap residues. For various age groups, the chronic dietary risk of bisultap was acceptable.This article is protected by copyright. All rights reserved.