A Northern Territory Government report has revealed high numbers of children suffering from sexually transmitted infections.

The 2009 figures for STIs in the Territory show 15 cases of infections, including gonorrhoea and chlamydia, reported in children under 10 years of age.

There were 143 cases reported in children aged between 10 and 14.

James Broadfoot from the Sexual Health and Blood Borne Viruses Unit says it is disappointing.

"We don't like seeing reported cases of STIs in young children," he said.

"It's something that we are always working on to improve.

"In terms of those age groups, it's a particularly confronting area for people of that age especially in the under 10 age group.

"All we can do in that time during these instances is to refer it to the appropriate authority."

Across all age groups, there were 2,423 cases of chlamydia in the Territory last year - four times the national average per capita.

"A lot of people who have it don't have any symptoms so they are at risk of causing damage to their bodies without realising it and passing it on to someone else," Mr Broadfoot said.

Rates of gonorrhoea were also bad, coming in at 20 times the national average.

"Treatment for STIs is simple and effective," Mr Broadfoot said.

"It's just a matter of people turning up."

He is urging any Territorians who have had unprotected sex to get tested.