This report summarizes the development trends of the new and renewable sources of energy of the world in recent years，and analyzes the development situation of every sub-sectors，then gets the conclusion that in recent years new and renewable sources of energy have developed rapidly，which are helpful to cope with global climate changing warm and ensure world sustainable development. The report analyzes the necessity of China to develope new and renewable sources of energy，and points out that though the new and renewable sources of energy have developed speedily in China，some serious problems still exist. The report discusses carefully of new energy investment，and gets the conclusion that the future opportunity of new energy investment is huge，but currently，investment on new energy may locally be overheated，which needs a high degree of attention. The report gives some elaborations to invest just as a suggestion. Finally，the report forecasts the prospects of the world as well as chinese new and renewable sources of energy，and gives some policy suggestions on how to develop chinese new and renewable energy industry faster and better.