A new campaign to educate gay men in NSW about transmission of HIV will be launched on the same day as the start of this year's Mardi Gras festival.

NSW Health Minister Jillian Skinner will launch the education campaign in Sydney on Friday, which will focus on teaching homosexual men how they can reduce the risk of HIV transmission.

The launch will coincide with the first day of the 35th Sydney Mardi Gras festival.

Produced by community-based HIV health organisation ACON, the campaign aims to educate gay men about advances of testing technologies and HIV treatments, with an overall goal of eliminating HIV transmission in the state by 2020.

Homosexual men are the population group at most risk from HIV in NSW.

Olympic trampoline champion and HIV advocate Ji Wallace will also be at the launch on Friday.

The Sydney Mardi Gras is a three-week festival that celebrates homosexuality and includes the Sydney Mardi Gras parade down Sydney's Oxford Street.

AAP ejs