Abstract: To understand the effect of fertilization on the occurrence of Bradysia odoriphage, and provide basis for its ecological control, we conducted laboratory and filed experiments on 8 kinds of fertilizers to understand their effect on the occurrence of Bradysia odoriphage, and screened fertilizers which could significantly inhabit the occurrence of the pest. The mode of action was also defined. The potting experiment showed that lime nitrogen, biogas slurry and tongzhuang could significantly control Bradysia odoriphage and had certain lasting period; on the first day, the population decline rate under liquid lime nitrogen, biogas slurry and tongzhuang was 81.6%, 85.0% and 78.7%, respectively; on the sixth day, the population decline rate was 71.3%, 44.6% and 40.3% , respectively. Laboratory experiment showed that biogas slurry and tongzhuang had significant repellent rate of oviposition. These fertilizers showed excellent insecticidal effect. There was a significant effect on the occurrence of Bradysia odoriphage and the population decline rate was 72.0%, 69.9% and 61.5%, respectively, when applying lime nitrogen, biogas slurry and tongzhuang to filed under recommend dosage in the occurrence of adults. These 3 kinds of fertilizers could be used in ecological control.