Marta has become the first player, male or female, to find the net in five consecutive Olympic tournaments, having initially made her international debut back in 2002.
She scored the opening goal of Brazil just nine minutes into the game. Marta Shoot with her left foot from the centre of the box to the centre of the goal to beat the keeper, Assisted by Beatriz.
Debinha scored the second goal 21 minutes of the game with a right footed shot from very close range to the bottom right corner.
Marta scored the third to add to her tally 19 minutes after the restart with a left footed shot from the right side of the box to the bottom right corner.
Andressa Alves converted a penalty as a result of a foul on her with a left footed shot to the bottom right corner to make 4-0 in the second half.
Beatriz completed the demolition with a left footed shot from the centre of the box to the bottom right corner, Assisted by Debinha to make it 5-0.
In other matches played, Great Britain beats Chile 2-0 while Sweden defeated United States 3-0.
Japan versus Canada, Zambia versus Netherlands and Australia versus New Zealand are coming up soon.