Abstract: Based on the study of Kachru's theory of World Englishes, this paper makes research on the global diversification and development of English as an international language. It points out that World Englishes have been adapting to the multicultural and multi-linguistic contexts in different regions and different nations and have evolved into a diversity of language varieties with multiple regional colours. The ownership of English is no longer limited to the speakers of so-called "Standard English" but extends to people with various linguistic and cultural backgrounds.