This experiment was carried out in Shobra El- Namla (Tanta), Gharbia governorate on peach orchard. From this orchard were chosen four feddans, two were cleaned from fallen fruits during the season and the other two feddans were with fallen fruits. The seasonal population abundance of the Mediterranean fruit fly (MFF) adult males was the highest on peach orchards with fallen fruits 76.5 and 110.3 with an average of 90.4± 5.3 indiv./trap/week during the first season (2017). In addition , during the second season (2018), the seasonal population abundance of the Mediterranean fruit fly (MFF) adult males was the highest on peach orchards with fallen fruits 57.5 and 105.2 with an average of 83. 8± 14.4 indiv./trap/week. The seasonal population abundance of the peach fruit fly (PFF) adult males was the highest on peach orchards with fallen fruits 44.8and 64.7 with an average of 53.2± 3.9 indiv./trap/week during the first season 2017.During the second season (2018), the seasonal population abundance of the peach fruit fly (PFF) adult males was the highest on peach orchards with fallen fruits 16.2 and 64.2 with an average of 40.0± 14.5 indiv./trap/week. Statistical analysis revealed that there was a significant difference between peach orchards with and without fallen fruits during the two seasons according to the average number of the insect adult males.