First, the "Shanghai Statistical Yearbook - 2011" is a highly information-intensive information tool. This book contains the 2010 Shanghai's economic and social areas such as statistics and important year since the reform and opening up and the main statistics. Second, the book is divided into 23 study items, namely:. 1, General; 2. Population and labor force; 3. National accounts; 4. Revenue and expenditure; 5. Energy production and consumption; 6. Fixed asset investment; 7. Foreign trade and tourism; 8. Price level; 9. People's lives; lO. Urban construction; 11. Agriculture; 12. Industry; 13. Construction; 14. Transportation, postal and information transmission; 15. Wholesale and retail; 16. Financial sector; 17. Real estate; 18. Science and technology; 19. Environmental governance; 20. Education; 21. Health, social security and social welfare; 22. Culture and Sports; 23. Legal, notary and other. For readers on the correct use of information, the table of contents is accompanied Main Statistical Indicators. Third, the yearbook information mainly through the annual survey by the Bureau of my collection, but not for other than specified, all information provided by the professional sector in the table-like notes are described in the data source. Fourth, the data used in the units of measurement are internationally standard measurement units. Fifth, the Yearbook of the total price index calculation are used in the current price. Sixth, some of the information in the Yearbook or the relative number of total number of units to choose different because of calculation errors were produced for mechanical adjustments. Seven, the Yearbook of the symbol table for use: "" lack of information in this table that the minimum number of units of measurement; "space" indicates that the statistics available with or without the information; "kind" said one of the main items. Eight, "Shanghai Statistical Yearbook," has been openly published by the readers of care and support at home and abroad, the contents of the yearbook and made many valuable editorial comments, which we are grateful. Limited to our standard welcome readers to the inadequacies of the yearbook to give criticism and correction to help us further improve the yearbook editor, with a view to better service to readers.