The family of a six-year-old girl abducted from her home in the NSW Riverina has described her ordeal at the hands of a "monster" as a "living hell".

The girl was playing alone in the front yard of her Macleay Street home at Mount Austin, a suburb of Wagga Wagga, when she was grabbed by an unknown man about 11.30am on February 14.

He forced her into a white, late-model Toyota Hilux dual cab utility - with NSW registration plates starting with BD or DB, and then drove off with her, police said.

About 90 minutes later the girl was released.

The girl's uncle, asked to be known only as Peter to protect her identity, has joined police to appeal for public help to find the man.

"A week ago our family's lives changed forever when our gorgeous niece was taken from us while playing out the front of her home - a place all of us think is safe," he said in a statement read to media in Wagga Wagga today.

"The hour or so before she was returned to us could only be described as a living hell.

"No other child should have to go through this type of torture.

"My niece's life has forever been changed by one man's cruel act.

"She's been left extremely traumatised and no longer feels safe at home, which was once a safe haven.

"What do you say to a young girl to ease her pain and suffering after such a frightening ordeal?"

Police have not said what the girl endured during her abduction.

Her uncle urged anyone with information which may help find her abductor to contact police.

The man has been described as about 40 years old, of medium build, with light-coloured receding hair.

"The best thing we can do now is to catch the monster who did this to my niece before another innocent child is harmed," Peter said.

"I'd appeal to anyone with information about this incident to contact police immediately.

"No matter how small or insignificant the information might be, it might be the missing link police need to catch the person responsible.

"I'd ask you to think about your own loved ones. How would you feel if they fell victim to such a callous attack?"

Anyone with information is urged to contact Crime Stoppers on 1800 333 000.