A leaflet handed out at Friday's UKIP conference says that teaching LGBT issues to primary school children is a form of "sexual grooming".
The leaflet, created by a group called Christian Soldiers in UKIP, is critical of the Challenging Homophobia in Primary Schools (CHIPS) programme.
CHIPS has been designed to tackle homophobic bullying among children, and is being gradually introduced in primary schools this year.
The Christian Soldiers in UKIP leaflet claims that the programme forces children to sing songs about "same sex attraction", and that CHIPS is a thinly veiled recruitment drive by LGBT people because "such people cannot produce their own kind".
The four-page leaflet says teaching LGBT issues indoctrinates young people – "the younger the better".
It also gives two examples of primary school songs which it says cause "gender confusion" among children.
It claims the use of the word "proud" in the last verse of "King & King" is "a clear reference to gay pride".
"My Princess Boy" is said to have "the intentional result of gender confusion".
A leading member of Christian Soldiers in UKIP, Reverend Philip Foster, told BuzzFeed News that things were better "in the old days" before LGBT education.
"Christian or not, you have to be concerned that children as young as 6 are being taught this kind of stuff," said Foster. "They're using the hook of bullying to push this agenda. It's bonkers to say primary school children are being bullied over homosexuality."
Foster, who recited the lyrics of "My Princess Boy" to BuzzFeed News, said the songs are "at the very least" creating gender confusion among young people and at worst "damaging them".
"The stuff in the leaflet is mild compared to what's actually being taught," he said.
"I don't know if this is an official UKIP position," he added. "But [UKIP education spokesman] Paul Nuttall agrees that we should get rid of sex education in primary schools."
A UKIP spokesman said the views in the leaflet were unacceptable:
These groups are authorised but not official, they are mechanisms for members with shared interests to associate but have no official role or status. They do not represent the party or its policies.
This leaflet was recently brought to our attention. Authorised groups are not allowed to invent UKIP policy, and we do not consider that this leaflet is of an acceptable standard to be associated with the UKIP brand.