The professional leaders of Bao Loc Secondary School, Lam Dong province have not been trained in the educational management, so they have still limitation in managing professional teams. To improve the quality of professional team leaders, the principals need to focus on training measures in place, both to meet the requirements of schools and professional leaders, and to be consistent with the characteristics and aspirations of professional team leaders. To improve the quality of training, the principals must determine the training objectives correctly, construct specific and practical training content, use team of experts inside and outside the school diversely, flexibly and create an environment so that the professional group leaders can improve their expertise actively.