The U.S.-China Economic and Security Review Commission, a congressional advisory body, issued a lengthy report this week looking at everything from China's currency policy to its growing military clout.
It also said that China Telecom had briefly "hijacked" U.S. Internet traffic in April, charges the company has denied.
"This report ignores the facts, is full of Cold War thinking and political bias," Chinese Foreign Ministry spokesman Hong Lei said in a statement carried on the ministry's Website (www.mfa.gov.cn).
Hong did not say which specific parts of the report China found so objectionable.
"We advise this so-called committee to stop interfering in China's internal politics, and do more things that are conducive to Sino-U.S. mutual trust and cooperation," he added.
The commission was set up in 2000 to advise the U.S. Congress on the economic and national security implications of the U.S.-China relationship. Its members include scholars, former government officials and diplomats.
China-U.S. relations have been strained this year over everything from U.S. arms sales to Taiwan, Tibet and the value of the Chinese currency.