For the compensation principle and scope,investors indirect loss should be compensated to increase the price of wrongdoers.

The author makes a deep research into the rule which is mainly focused on the following three points: the doctrine of liability fixation, principle of compensation and the amount of compensation, then puts forward some perfections.

Educational equity contains three rational principles of educational resources allocation,namely equality principle,difference principle and compensation principle.

After analyzing the research progress in terms of the fundamental theory and compensation principle,the authors determines the basic elements of ecological regulation compensation,for a study case of Yinma River basin,which include compensation body,compensation objects,compensation standards and guarantee measures.

Based on the social insurance tax which is exerted in China for the purpose of improving the system of social insurance, this paper discusses the theories and authors of social insurance in a systematically way, analyses the principle of compensation and judging criterion and points out the advantages and disadvantages of social insurance in economic market construction and development of economy.