A project can be referred to a mission with restrictions of time and budget. The task of river environmental rehabilitation and planning shares the common characteristics and the same life cycle with a “project.” In practice, the problems of makeup works, overtimes, and design changes are common. If the causes of these problems can be found and solved, the quality of the task of river environmental rehabilitation and planning can be improved. Therefore, this study uses questionnaires to investigate the problems occurred in practice and uses in-depth interview to identify the problems. To analyze these problems with project management, a systematic method is used to evaluate the relationship between the difference of planning process. © 2018, Taiwan Agricultural Engineers Society. All rights reserved.