Mr Trump signed two executive orders targeting two of China’s biggest apps, signalling a major escalation in Washington’s stand-off with Beijing over its power in global technology.
The announcement comes as Microsoft is in talks to buy TikTok ahead of a September deadline set by Mr Trump.
The executive orders against the short-video sharing platform TikTok – owned by Chinese firm ByteDance and the messaging service WeChat – owned by the Tencent conglomerate is the latest measure in the increasing stand-off between the Trump administration campaign and China.
The owners of Tik Tok are now considering legal action against the US and said it was “shocked” by the order from the President.
Many operators of the 35 Facebook and 88 Instagram accounts posed as Americans, and some managed Trump fan pages, running foul of the social network’s rules on what it calls coordinated inauthentic behaviour.
The network had a small reach, with only 1,600 users following its Facebook pages and 7,200 tracking its Instagram accounts.