This book researchs what factors may influence global tourism and gas energy industries will experience recession rapidly . This book concerns to explain how and why tourism industry development will be influenced by these possible factors, e.g. pollution, travel stragegy, illness etc. different factors to cause global tourism development will spend how much time to experience growth stage from birth stage, growth stage to mature stage, even decline stage. For example, I shall explain how to prove environmental pollution will influence to the country's tourism industry will experience decline stage from growth stage. I shall attempt to explain how tourism industry strategies may assist the tourism development to experience growth stage or mature stage in short time rapidly. What are the strengths and weaknesses between online and offline travel agents? How can online travel agents win offline travel agents or how can offline travel agents win online travel? Why do travel consumers either choose online travel agents or offline travel agents to help them to arrange travel trips? What factors will change their mind to influence them to choose to buy electronic air ticket or paper air ticket from either offline travel agents or online travel agents? Any these strategies can assist tourism industry development to spend short time to experience growth, even mature life cycle stage.