This article attempts to prove that when Ziji lies i n position of objective,the verb bound in the domain has restraint funtion to Zi ji long-distance binding.

The binding problem of ziji does not totally belong to syntax, and no ideal syntactic theory has been found to completely solve the problem of long-distance binding of the Chinese reflexive zij

It is widely assumed that Chinese reflexive ziji is an anaphor (in the sense of having to be bound in a certain syntactically defined domain) with three characteristic properties: the long-distance binding, subject orientation, the blocking effect, which attracts the attention of linguists.

With Principle A of the Binding Theory as its theoretical backdrop, this paper is mainly devoted to a discussion of various modification schemes within the framework of the Binding Theory to remedy the inadequacies of this principle, revealed by the "rebellious" syntactic behavior of the Chinese anaphor "ziji" known as "long distance binding".

In DBCluC+,the algorithm used network topology to model the facilitator and added a attribute named width of access point,so it used the constraint distance to replace the Euclidean distance or obstacle distance in DBCluC to as the criterion of the dissimilarly.