The control efficacy of 42% Metam sodium AS（450 kg·hm^-2），21% calcium cyanamide GR（900 kg·hm^-2），96.5% Ammonium Bicarbonate GR（3 000 kg·hm^-2）and 4.5% Beta cypermethrin （12 000 mL·hm^-2）on greenhouse earthworm were investigated by field tests in this study．The results showed that the control effects of all these 4 tested agents against greenhouse earthworm reached over 80% after applying the pesticides for 30 days．And after applying the pesticides for 180 days，the field control efficacy of 96.5% Ammonium Bicarbonate GR and 42% Metam sodium AS could reach 70.31% and 63.99%，respectively．The result also indicated that the alternative usage of 96.5% Ammonium Bicarbonate GR and 42% Metam sodium AS could effectively control the number of greenhouse earthworm．