The most important distinction between real subject and virtual subject is that the latter allows the absence of physical body,which provokes a series of new characters of virtual subject such as the more intelligent,free and open subject than ever before.

By the analysis of the connotation and standard of the legal personality,we find that legal personality presents the tendency towards expanding in the modern society,but the tentative plan to give the virtual subject the leg.

This paper presented ten functionalities of collaborative virtual subject which fall into two kinds: body and brain functionality.

The Research on Intelligent Virtual Agent with Emotion;

To simulate the real world and enhance the reality and immersion of the virtual environment, how to increase the intelligence and believability of intelligent virtual agent has been the key problem that most researchers focus on.

The application research of the virtual host in internet;

Score Inquiring System in Network based on Virtual Host;

File upload and download in the virtual host;