This paper studied the spatial factors activating the personal interaction based on case studies of $M'{e}diath'{e}ques$ in France. The spatial factors are analyzed into material factors and dematerial factors. The material factors have physical features in space and directly or indirectly activate the personal interaction. They consist of 8 elements including pocket space, balcony, atrium, stairs, elevators, windows, conference rooms and furnitures. The dematerial factors consist of 6 elements including polycentrism, continuance, mixture, interpenetration, dematerialization, transparency. They are compounded of material factors and explain them conceptually. But dematerial factors are abstract concepts. To provide reliability I confirm the relationship with dematerial factors by using a connections, topology, a phased depth of the Depthmap as the framework of the visual recognition of the space syntax covering the characteristic of dematerial factors. The result of the quantitative analysis human-behavior in $V'{e}nissieux$ $M'{e}diath'{e}que$ and the result of applying the spatial factors of $M'{e}diath'{e}ques$ as the community center to the $V'{e}nissieux$ $M'{e}diath'{e}que$ proved that the spatial factors are significant factors of the $M'{e}diath'{e}ques$ as the community center.