The development of versatile applications created and claimed by Chinese firms "undermines the national security, international strategy, and economy of the US", Mr Trump says.
"This information assortment takes steps to permit the Chinese Socialist Gathering access to Americans' own and exclusive data," he guarantees in his leader request.
Is the US going to part the web?
Past TikTok: Who else may Best boycott?
What TikTokers think about Trump's boycott danger
TikTok says it has never given over any US information client to Chinese specialists.
Mr Trump's activities against TikTok and WeChat are the most recent in a developing effort against China in front of the US presidential political decision in November.
Since taking office he has been pursuing an exchange war against China.
The US isn't the main nation to present squares on TikTok. India has prohibited utilization of the application, and Australia is additionally thinking about making a move.
The application is seen by some just like a key instrument in China's interior reconnaissance contraption - requiring nearby clients who have been blamed for spreading vindictive bits of gossip to enlist a facial output and voice print.
WeChat is mainstream with clients who have associations with China, where significant long range informal communication stages -, for example, WhatsApp and Facebook - are blocked.
"Having it unexpectedly cut off would be heartbreaking and startling for individuals, particularly in the pandemic," said attorney Michael Bien, who's speaking to those difficult President Trump's boycott.
He said the chief request is illegal, in light of the fact that it disregards clients' privileges to free discourse.