This study analyzes the perceptions about the concept of professional army. It aimed to find out the ideas and attitudes of the management people in defence sector toward being an army with totally professional soldiers. Recently, the effectiveness of the Army’s personnel was questioned for being totally professional, and efforts to modernize it or set up a completely new system. This large-scale organizational change has been discussed on the framework of opensystem theory. Although there may be various reasons for their perceptions, the reasons behind those perceptions are not investigated. The thesis will enable some information for further studies by picturing the present condition and finding the individual perceptions of respondents at all levels (upper, middle and lower levels) before the professional army established so that it gives a way for understanding how the social perception will change when the transformation is underway.