Braydon Smith, 23, who lost to Filipino John Moralde in their featherweight bout on points, collapsed after returning to his dressing room in Toowoomba, Queensland last Saturday.
The fighter was put into an induced coma but never regained consciousness.
On Monday his life support was turned off at a Brisbane hospital.
Australian Medical Association Queensland president Shaun Rudd said believes that boxing should be banned after the boxer’s death.
"We believe that a so-called sport where two people knock each other in the head as often as you possibly can to win a bout seems rather barbaric," he told ABC on Monday.
"You're not allowed to hit the organs beneath the belt whereas you're allowed to hit the organ above your shoulder, which is the most important organ in the body," he added.
Boxing Queensland president Ann Tindall defended the sport's reputation. "It's a tragic accident; a tragic accident as you can have in a car or any other sport. There are many sports that have deaths in them," Tindall was quoted as saying by ABC.
"We don't believe we're immune, but at the same time we don't believe it's the boxing that's going to actually harm any of our youngsters," he added.