Rising space power China attacked the newly created U.S Space Force as a 'direct threat to outer space peace and security'.
Foreign ministry spokesman Geng Shuang told that China is "deeply concerned about it and resolutely opposed to it".
"The relevant U.S actions are a serious violation of the international consensus on the peaceful use of outer space, undermine global strategic balance and stability, and pose a direct threat to outer space peace and security," Geng said at a regular briefing.
China's space program has advanced rapidly since its first crewed mission in 2003.
In a report last February, the Pentagon asserted that China and Russia have embarked on major efforts to develop technologies that could allow them to disrupt or destroy American and allied satellites in a crisis or conflict.
China in 2007 conducted an unannounced missile strike against one of its own defunct satellites, creating an enormous amount of space debris.
Geng dismissed such concerns, calling them 'unfounded counter charges' that merely provided the U.S with a justification for its own actions.
China, he said, has consistently opposed the weaponisation of space and believes international treaties on arms control in outer space need to be negotiated.