In Group B, U17 Song Lam Nghe An only needs a draw to continue while U17 Hoang Anh Gia Lai must win to keep their hopes running.
The game was favorable early for the Nghe An team when in the 12th minute, Viet Duy soloed from midfield before the technical tire opened the score. The attacking efforts helped U17 Hoang Anh Gia Lai equalize 1-1 thanks to a beautiful free kick from captain Vu Thai in the 40th minute. However, the second half witnessed a strong return of U17 Song Lam Nghe An. Anh Duc fired a long-range shot to increase the score to 2-1 in the 69th minute, before Huy Phan headed the ball to seal a 3-1 victory.
In the match at the same time, U17 Hanoi showed their dominance over U17 Becamex HCMC and won 2-0 thanks to a double from Manh Quan, thereby finishing with U17 Song Lam Nghe An with 7 points to share the top two positions. U17 Becamex HCMC ended the group stage with 3 points, while U17 Hoang Anh Gia Lai was eliminated after 3 consecutive losses.

In Group C, U17 The Cong Viettel had an explosive performance against U17 Ho Chi Minh City. In the first half, the army team scored 5 consecutive goals, in which Dai Nhan scored a double, Duc Tai and Dinh Vy left their mark, interspersed with Huy Hoang's goal. Although U17 Ho Chi Minh City had an equalizer by Phu Cuong, in the second half, The Cong continued to dominate and scored 2 more goals thanks to Anh Quan and Huy Hoang. Le Nhan's late goal only helped U17 Ho Chi Minh City shorten the gap, before accepting a 2-7 defeat.
In the remaining match, U17 PVF-CAND proved their mettle with a 5-1 victory over An Giang.

At the end of the group stage, U17 Hanoi and U17 Song Lam Nghe An (both with 7 points) won two quarter-final tickets of Group B. In Group C, U17 The Cong Viettel (6 points) followed U17 PVF-CAND (9 points) to the knockout round. The two third-placed teams, U17 Becamex HCMC and U17 An Giang (both with 3 points), will wait to compare their achievements in hopes of advancing, while U17 Hoang Anh Gia Lai and U17 HCMC will be eliminated.
On September 19, the final match of Group A will take place, promising to bring fierce competition to determine the remaining tickets to the quarter-finals.