China says the US has "severely violated" their trade truce and will take strong measures to defend its interests.
China's Ministry of Commerce said Washington has "seriously undermined" the agreement reached during talks in Geneva last month, when both countries lowered tariffs on goods imported from each other.
The spokesperson added that US actions have also severely violated the consensus reached during a phone call in January between China's leader Xi Jinping and President Donald Trump.
The comments come after comments by Trump on Friday that China had "totally violated its agreement with us".