America’s Secretary of State Mike Pompeo confirmed on Thursday that Kelly Craft will be sent to Taiwan. She will be the third senior US official to visit the island since August.
China has claimed sovereignty over the whole of Taiwan, a democracy of around 24 million people.
The two nations have been governed separately for over seven decades.
However, Beijing has claimed ownership of Taiwan under its “One China” policy which demands there is only one sovereign state under the name China.
China’s Communist Party has previously threatened to take Taiwan by force if diplomatic efforts do not succeed.
Mr Pompeo made the Taiwan trip announcement in a statement in which he condemned the mass arrests of 53 democracy activists in Hong Kong.
He labelled the arrests as an “outrage and a reminder of the Chinese Communist Party’s contempt for its own people and the rule of law”.
The US Secretary of State said Washington would consider sanctions and other restrictions on those involved in the Hong Kong crackdown.
He went on to say Taiwan was “a reliable partner and vibrant democracy that has flourished despite Beijing’s efforts to undermine its great success”.
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He criticised Mr Pompeo’s remarks on Hong Kong which came after Donald Trump supporters breached Capitol in an attempt to stop the certification of Joe Biden’s US election win.
Writing on Twitter, Mr Chen said: “For what? To argue for the shameful riots on Capitol Hill yesterday.
“Every such stupid move will only strengthen Chinese mainland resolve for the reunification.
“Taiwan (Tsai in this case) is just being used and played by Washington politicians. Sad.”
Video footage on Wednesday showed thousands of protestors storming the Capitol building and fighting police.
Four people have been confirmed to have died due to the violent protest in Washington.
During Mr Trump presidency, tensions between China and the US have continued to grow.
Taiwan’s foreign ministry spokeswoman, Joanne Ou, welcomed the news of Ms Craft’s visit to the island.
She said details of the trip were being negotiated with the American Institute in Taiwan.
Beijing has continued to block Taiwan from becoming a member of the United Nations, claiming it is part of China.