A review by Tasmania Police has exonerated the actions of officers who twice strip-searched a 12-year-old girl during a drug raid.

Deputy Commissioner Scott Tilyard has finished a review of police actions during the raid on Wednesday at Rokeby on Hobart's eastern shore.

The girl was searched in a bedroom of her house with her mother present.

No drugs were found on her.

Mr Tilyard says a review was conducted rather than an internal investigation because the facts did not suggest any of the officers involved had acted unlawfully.

The review found both searches were justified based on the behaviour of the girl and others in the house at the time.

Mr Tilyard says the officers involved have his full support.

"The conduct of the people in the residence that was being searched, including the movements and activities of the young girl in question, caused the officers to suspect that she may have been in possession of some drugs," he said.

"We find drugs in all sorts of places on all sorts of people."

The Deputy Commissioner says searches of children by police during drug raids are rare and the girl was not touched or required to squat as reportedly claimed by her mother.

He says it is legal for officers conduct a strip search of a child of any age, if it is warranted.

Police say a white powder seized in the raid, possibly methamphetamine, is being analysed by forensic officers.