A concept of Fuzzy Atmosfield (FA) is proposed to express the atmosphere generated by many machines/robots and humans communication. It is characterized by a 3D fuzzy cubic space with "friendly-hostile", "lively-calm", and "casual-formal" axes. Its visualization is also proposed by shape-color-size graphics. The FA aims to be a tool for expressing the atmosphere state of humans-machines communication. A part of basic demonstration example, i.e., enjoying home party by five eye robots and four human beings, is also introduced.