After defeating Phillipines 6-0 in their group days earlier, the Aussies eased past Laos at the Lao National Stadium.
New Melbourne City signing Steve Kuzmanovski opened the scoring just before the break.
The Young Socceroos doubled their advantage in the second half thanks to Mario Shabow to earn a good 2-0 win.
Now, the Aussies will prepare to face Japan on Tuesday. The Japanese are also on six points in a group blockbuster.
The group winner automatically qualifies for next year's AFC U-19 Championship in Bahrain, while the five best runners-up also progress to join the host nation.