Fifty-six Chinese military planes entered Taiwan's air defense identification zone on Monday, a one-day record since the self-governed island began disclosing such figures in September last year, according to the defense ministry.
It brings to 149 the number of military planes that have intruded so far this month.
Taiwan's military planes were scrambled to warn the Chinese aircraft away.
Japan's Maritime Self-Defense Force said Monday that it had conducted joint training with the U.S. Navy's nuclear-powered aircraft carriers Ronald Reagan and Carl Vinson, and the British Royal Navy's aircraft carrier Queen Elizabeth in the waters southwest of Okinawa on Saturday and Sunday.
It has been speculated that China's actions are partly intended to restrain the United States and its allies.
China's latest actions also came after the U.S. State Department warned that its military activity near Taiwan risks miscalculation and undermines regional peace and stability.
China's Foreign Ministry dismissed the U.S. concerns and said they sent an "erroneous and irresponsible" signal.
China, which considers Taiwan a renegade province to be reunified with the mainland, has ramped up pressure on Taiwan following its recent application to join the Trans-Pacific Partnership free trade agreement.
The administration of President Tsai Ing-wen is stepping up its efforts to convince member countries, including Japan, to accept Taiwan as a TPP member.
The incursions appear to also be a warning to the United States and Japan against further strengthening relations with Taiwan.
China has expressed strong dissatisfaction with the new Japanese Prime Minister's Fumio Kishida's welcoming to Taiwan's application for TPP membership.
