Đại Việt National Socialist Party was founded by Nguyễn Xuân Tiếu,[3] with Trần Trọng Kim as General Secretary, and was a force with about 2,000 members, exerting influence in big cities such as Hanoi and Haiphong during that time World War II.

This was a pro-Japanese political organization that supported the establishment of the Empire of Vietnam led by the Nguyễn dynasty and its emperor Bảo Đại, who declared Vietnamese independence from France on 11 March 1945.

This was a group of the northern branch of the Vietnam Restoration Allied Society (Việt Nam Phục quốc Đồng minh Hội), the southern branch was the pro-Japanese branch of Nationalist Party of Greater Vietnam, and associated with pro-Japanese groups in the Daiviet National League (Đại Việt Quốc gia Liên minh).

[4][5] Three days after the declaration of independence on September 2, 1945, the Provisional Government of the Democratic Republic of Vietnam ordered the dissolution of Đại Việt National Socialist Party, accusing it of conspiring to conduct harmful activities independent background.

Đại Việt National Socialist Party was accused of aiding foreign countries to endanger independence.