Abstract
This research will be carried out in Jambo Labu Village, Birem Bayeun District, East Aceh Regency for 1 month, starting from September to October 2020.This study uses a survey method, to determine the location of the study carried out "purposively" which is one of the sampling techniques intentionally.The results of the study found that the percentage of pest attacks The percentage of fruit fly attacks was still very low at 3, 015% where the highest attack percentage in the first observation was 4, 87%. The average intensity of fruit fly attacks on observations was 2, 44%. The intensity of fruit fly attack on the four observations was in the light attack category. Mild attacks are caused by good garden sanitation, favorable climate, low fruit fly population, and citrus growing vegetation that does not support the development of fruit flies. The amount of sweet orange loss in birem bayeun sub-district with regression Y = 19,963 - 0.0187X, where when the intensity increases by 1% there will be a yield loss of 0.0187 kg/ha.