Commerce Minister Chen Deming said Friday the Chinese government supports domestic firms investing overseas to safeguard their legitimate rights according to laws.
Chen said recipient countries should help create a more transparent and just environment to boost the confidence of foreign investors.
The minister made the remarks in response to a media query about China's Sany Group's recent suit against US President Barack Obama, at a press conference in Beijing.
Some legislators of developed countries still use the "cold war mentality" when assessing Chinese companies' overseas investment, Chen said.
"For every three Chinese yuan planned to be invested in the US, only one yuan would be approved by the US authorities," said Chen.