During the deregulation weave of natural monopoly industry in the word, reform of natural gas industry among those shows difference and complex. This paper aims at developing theoretical frame of industry organization model of natural gas, and it is illustrated by applying it to five countries. Firstly, based on three coordinating system theory nine organization models are identified, and described in more detail using additional structural features. In the following, developed theoretical frame is illustrated by applying it to four countries.

Ⅰ. Introduction
Ⅱ. Basic Conception and Basic Organization Models in Natural Gas Industry
Ⅲ. Extended models of organization in the natural gas in natural gas industry
Ⅳ. International Experience of Organization Model Involving in Natural Gas Industry

• Wu, Yingying(Business School of Shandong Normal University)