The Mediterranean fruit fly is considered as the most dangerous insect on the world citrus fruits and exists in all citrus-growing areas of Morocco, with serious problems for Moroccan export. The management of this pest is mainly based on chemical control which leads to several issues, mainly the emergence of pest resistance, environmental pollution and negative impact on human health. The objective of this study is to assess the evolution of the sterile males of C. capitata during 2019 and 2020 in citrus orchards (Berkane Region) by a weekly monitoring system using two pheromone traps for males and two food attractant traps for females. The pupae of medfly’s sterile males had been provided by a laboratory in Valencia (Spain), then were kept in a rearing room at INRA (Qualipole of Berkane) until the release dates in fields. The insect releases were done during 2017, 2018, and 2019. The adults sexing and the identification of sterile males were done in laboratory using a binocular magnifier and ultraviolet light. Our results indicated that the males were the most caught compared to the females for both years (2019 and 2020), with a total sum of 2607 males and 55 females caught during 2019. In 2020, 707 males and 29 females were recorded in traps. Furthermore, wild males were more caught than sterile ones during 2019, with a total sum of 2396 wild males compared to 211 sterile ones during 2019. However, no sterile male has been identified in 2020, as there was no releases done for that year.