There are so many industrial manipulators which involve in lot of task in the industry. Developing the mobile manipulator will expand the operational region of the manipulator. Moreover, two wheeled mobile manipulator will further expand the task of the mobile manipulator by being able to work in limited space and so on. However good mobile manipulator should be robust against environmental disturbance. Therefore, environmental recognition of two wheeled mobile manipulator is proposed in this paper. Reaction torque observer is implemented to recognize the environmental disturbance. Compliance control is used to compensate the environmental feedback. Experiment was carried out to show the effectiveness of the proposed method.