System approach to management professional development organization is explored in the article. The importance and urgency of the problem of personnel development of a modern organization in a competitive environment is proved. The professional development of personnel as a component of personnel management and a means of increasing the competitiveness of the organization is considered. Different views of scientists on the definition of personnel development, professional development and personnel development system have been clarified.The tasks of professional development of personnel are outlined. System model of professional development process has been developed. The elements of the developed model are characterized, namely:development of professional staff development strategy;setting goals and objectives for professional development of staff; organization of professional development process; diagnosing the needs of professional development of staff; drawing up a plan for professional development of staff;budgeting professional development; determining areas of staff training; definition of methods and forms of teaching; implementation of the staff training process and evaluation of the effectiveness of professional staff training.