The spokesperson said the visit sent the wrong signal to those who want Taiwan to be independent.
The committee met with Taiwan’s Premier Su Tseng-chang on Thursday and is due to see President Tsai Ing-Wen on Friday.
The visit is part of the committee’s work examining a shift in British foreign policy towards the Indo-Pacific region, which the government has identified as an economic and diplomatic priority since leaving the European Union.
The committee is a parliamentary body, separate from government and made up of elected lawmakers from a range of parties. It scrutinises government policy but does not have statutory powers.
During their meeting with Su, the committee’s chair, Alicia Kearns, invited him to visit the British parliament “to see more of our people and our culture and our communities and how we seek to represent our communities in parliament”.
Committee members did not immediately respond to a request for comment on China’s accusation. The committee is due to meet with Tsai on Friday.
“We look forward to continuing to deepen the friendly and cooperative relations between Taiwan and the UK through this face-to-face exchange, and to continue to work together for the peace, stability and prosperity of the Indo-Pacific region,” the presidential office said ahead of the meeting.