Just like a private living room in the public, the private-blog has both public and private characters.

Arguing Privacy: Researches on the Design for Comfort Station, a Public Art;

Privacy and publicity of resident district research;

Multi-agent negotiation model with emphasis on privacy;

Author points out that the outer and semi-outer public space should not be increased in design on the contra outer and semi-outer private space should be adopted.

This paper emphasizes the influence of speech privacy,and illustrates how to achieve speech privacy in total planning,interior decoration and the screen design,which can be referred by architects and interior designers.