However,for handling assistance appeal cases,the current regulations on people s letters and visits is disadvantage in a certain extent,especially,the organization in disorder,the management random,the authority interference.

The rightness,reality,remediality,stability and sacredness of constitution comprise main parts of its authority.

The environment right theory draws man's self-examination for the traditional legal theory,but owing to the defects of the environment main body and content such as indefinite nature,non-arrangement nature and un-helpful nature,such theory is quite insufficient with regard to dealing with the environment crisis.

There are many problems in our current pretrial custody system,such as assembly of detain right,uncertainty of detain period,non-neutrality of detain place,lack of procedural remedies,etc.