Government s guarantee responsibility in investment mode of BOT of highway engineering;

Raised the necessity of benchmarking and a few major procedures; outlined the legal characteristics of WEEE BOT project financing and the legal conflict and risk of government s guarantee responsibility.

The undertaking of guarantee responsibility has great deal to do not only with the creditor s interest but also with the guarantor s.

The purpose of defining contract alteration is to analyze the effects of contract alteration on guaranty duty, to compare the relevant regulations in different countries, and to modify our own laws and regulations.

The character of the guaranty liability is not concerned in the Chinese Guaranty Law, most people regard it as a civil liability, thus in the beginning it put the guarantors to an unfair position and damage the guarantors benefits.

For it’s characteristic, the effectiveness of the new loan contract and its suretyship liability are always the most disputed problems in theory and practice.

Using the achievement by the scholars for reference, this paper approaches the concept and definition of suretyship, invalid suretyship and its civil liability, suretyship liability, the term of suretyship as well as the author s proposals for the legislation of our suretyship system, laying stress on combining theory with practice.