There are many examples of platform industries in life, the most classic of which are operating systems such as Windows and Linux. In addition, the platform industry includes the telecom industry, bank cards, Internet, shopping centers and advertising etc., encompassing the most important industries in the economy. Platforms have become an integral part of the modern economic system and a crucial economic system in the new economy. In light of this, the study focused on building an analytical framework for platform industry and economy while representative companies from 5 industries are used to test and verify the framework. According to the research result, the platform industry and economy analytical framework proposed by the article, including the platform’s externality, multi-homing strategy, competitive model, pricing and control ability, is able to effectively explain various platform industry and economy model.