The need for training throughout the whole occupational life time of a personnel is crucial. As educational needs of all personnel in hospitals are not the same, planning for holding in-service training courses is complex and sensitive, which in some cases causes incidence of challenges and different taste in training. Understanding these challenges and offering solutions to them are really important. Methods: This research was a qualitative study, conducted through a phenomenological approach,

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... for which structured interviews were used to collect data. A total of 10 training supervisors, training volunteers, and administrators of clinical sections, who had been chosen through a targeted method were interviewed. The average duration of interviews was 35 minutes, and their analysis was done through content analysis method. Results: In this research, five primary codes and fifteen secondary codes were obtained. The primary codes comprised support by managers, financial supply, need assessment, time period, and program content. Conclusion: Based on this research, holding in-service training is faced with serious challenges due to different training needs of the hospital personnel and medical team, which are categorized into five groups of support by managers, program need assessment, program time period, program financial support, and educational content. It appears that solving such challenges requires collaboration between the three major decision-maker pillars, i.e. vice-chancellor for treatment, hospital, and universities of medical sciences.