Foreign Ministry spokesman Hong Lei called on Japan to adhere to the One-China principle and honour its commitment to China on Taiwan-related issues.
"Japan should refrain from providing platforms for anybody in any name or pretext for spreading Taiwan-independence remarks," Hong told a media briefing here.
Taiwan issue concerns China's core interests, he said.
Japan in the past unheld the One-China policy and not supporting "Taiwan independence" or "UN membership referendum" by Taiwan authorities, state-run Xinhua news agency reported.
Relations between the mainland and Taiwan stalled when the Kuomintang KMT forces, led by Chiang Kai-shek, fled to Taiwan in 1949 after defeat in a civil war.
