The canteen room is a public facility used by visitors to eat, where the scope itself is a place to sell and buy food. Sometimes the canteen is used as a communal space, namely a space for conversations between individuals or groups. By utilizing this canteen space as a communal area, there are many diverse user activities, the behavior of different individuals can be influenced by themselves and the surrounding environment. Therefore it is necessary to conduct research to determine the behavior patterns of canteen room users on the Campus of the Engineering Department, University of Indonesia. The research method used is by using the SLP method and ergonomic approach, RULA aspect analysis, also collecting data by visiting the research location directly. Then the data is analyzed and produces factors that affect the effectiveness of the room. The canteen room at the Department of Engineering, University of Indonesia still has a major problem, namely room effectiveness, the distance between furniture is too close to make space for movement and walking to be disturbed. Therefore, it is necessary to relocate the canteen space.