Research and Development Strategy and Focuses of Chinese Virtual Observatory

With different astronomical and technological backgrounds, various of research and development (R&D) strategies are adopted by different Virtual Observatory (VO) projects.In the paper, R&D aims and focuses of several VO projects are introduced, pro and con for small VO projects including Chinese Virtual Observatory (China-VO) are discussed. Base on available resource and technological background, China-VO will emphasize itself on portal and application in 5 key research fields:China-VO platform construction,integrated access of national and international datasets,VO integration of existing astronomical tools,VO integration of astronomical instruments,education and outreach based on VO.