This paper summarizes Kang Youwei's contribution in spreading western modern cultural thoughts.

Kang Youwei is one of the great men with great influence in the modern history of China. He not only led and launched the Reform Movement of 1898, but also made great achievements in modern ideology and culture. This is mainly reflected in the following aspects: he pushed China's reform thought and political reform to the highest peak in modern times; Organically link the viewpoint of evolutionary history with democratic politics; Establish the great idea of great harmony and put forward the systematic utopian socialist thought; He made a new-democratic interpretation of traditional Confucianism and became the originator of new Confucianism. Vigorously advocate the development of modern science and technology; He also made a unique contribution to calligraphy.