Underworld property organization,which is the early form of the underworld organization has appeared in our country.

In order to recognize underworld-like crime, it is necessary to understand its concept and characteristics, and the circumscription between underworld-like organization and underworld organization, .

At present Hong Kong,Macao and Taiwan regions have formulated specific criminal laws against underworld organization and prescribed concrete rules and regulations to punish underworld crimes.

The underworld organization is a half-concealed social community with numerous members.

The present thesis aims at analyzing the differences and similarities between the underworld and the organizations with traits of the underworld from the aspect of "having known" and "attend", so as to help identify them correctly and punish them severely.

Over the past few years,the organizations with traits of the underworld have shown the tendency towards perfection in their structure,the diversification of means,and political infiltration.

The forming and development of the underworld organizations is regular.

Generally speaking, the gangland organization develops from low - grade to high - grade which takes steps first as criminal group (usually the base of gangland organization) , then as gangland - alike organization, and to gangland organization, finally develops into multinational gangland organization.