[Objectives]  To provide a practical method for controlling the Chinese chive maggot, Bradysia odoriphaga. [Methods] The efficiency of using fumigation to control the Chinese chive maggot, Bradysia odoriphaga, was evaluated comprehensively in laboratory bioassays and greenhouse experiments. The toxicity of dichlorvos FU and isoprocarb FU to B. odoriphaga adults was measured in a glass chamber. The control efficiency of these two kinds of fumigants and chlorpyrifos-phoxim EC were compared using plot tests in a greenhouse, and the relative economic benefit of the three fumigants was analyzed by estimating yield in relation to cost. Finally, residues of the various fumigants used were measured and compared. [Results]  Dichlorvos FU was the most toxic of the fumigants tested to B. odoriphaga adults. The results of greenhouse experiments show that the control efficiency of a medium dosage of 15% dichlorvos FU and a high dosage of 10% isoprocarb FU was up to 96.21% and 86.05%, respectively. The control efficiency of these pesticides against larvae was up to 97.08% and 90.00%, respectively, significantly higher than that of 20% chlorpyrifos-phoxim EC (P<0.01). Moreover, 15% dichlorvos FU and 10% isoprocarb FU increased yield by 41.71% and 30.75%, respectively, gave financial returns of 20 507.94 Yuan/hm² and 15 118.28 Yuan/hm², respectively, and had input-output ratios of 1︰ 16.28 and 1︰10.33, respectively. Rigorous monitoring found that any dichlorvos residues in Chinese chive samples were below the limit of detection. The isoprocarb residue after 15 days was 0.186 mg/kg, which is below the MRL standard.  [Conclusion]  Fumigation was an effective, environmentally friendly way of controlling B. odoriphaga. Dichlorvos FU and isoprocarb FU are recommended for controlling this pest in Chinese chive crops.