In recent years, research on motion control of robot in human living environment has been actively carried out. It's necessary to make a path planning of robot and estimate the human behavior s in order that robot can work in human living environment. In this research, human behaviors in some particular environments where can show the human walking characteristics have been observed and then we extract the human gait characteristics by calculating the displacement of human position information. And the similarity of each environment is calculated from the data of human gait characteristics and in the end human behavior pattern is estimated.