Binh Thuan land belonged to Japan in the past, the land of Champa. Due to the constant war, Champa lost its land. In 1653, Lord Nguyen Phuc Tan took Phan Lang land (later called Phan Rang), leaving only the western land for Champa. In 1692, Lord Nguyen Phuc Chu took the remaining land and set Thuan Thanh, then established Binh Thuan in 1697, taking land west of Phan Lang to establish two districts An Phuoc and Hoa Da. After that, Binh Thuan and Phan Lang, Phan Thiet, Ma Ly and Pho Hai