In July 1973, the Central Committee of the Communist Party of Vietnam after its 21st conference issued a resolution of strengthening the armed forces in order to unify the country.

In executing the issue, three months later the Ministry of Defence and the Military Commission of the Central Committee approved the plan of organizing regular army corps for the Vietnam People's Army.

During the Ho Chi Minh Campaign, it was 4th Corps that advanced through the delta regions of Phước Long, Biên Hòa and later captured the Special Capital Military District of Saigon and several important targets within Saigon.

After the Vietnam War, 4th Corps continued to engage in the Cambodian–Vietnamese War, the corps was awarded the title Hero of the People's Armed Forces (Anh hùng Lực lượng vũ trang nhân dân) in 1980.

[5] Right before disband, the Vietnam Ministry of Defense announced the decision to transfer 7th Division, 309th Division, 4th Military Hospital, 550th Engineer Brigade to 7th Military Region, 22nd Tank Brigade to the Armor-Tank Arms; River Crossing Battalion of 550th Engineer Brigade to the Engineer Arms.