The main factors driving migration include a pursuit of richer educational resources, safer investment environments and improved quality of life, the Annual Report on Chinese International Migration 2012 said.
The migration trend is likely to bring losses to China in terms of assets and talents, pose obstacles for China's supervision over non-performing assets and complicate the development of its substantial economy, it said.
According to the report, there were more than 45 million overseas Chinese in 2010, the world's greatest population of migrants.
In 2011, 1.50 lakh Chinese gained permanent residency in major immigration destinations, with the United States, Canada and Australia as the top three such countries.
According to the report, most of these immigrants from China are high net worth individuals, and their investments are mainly focused in real estate, foreign currency and deposits and stocks, among other fields.
"Migration for investment has become a significant part of Chinese people's international migration," the report said.