The OWN channel, which launched two months ago, is being watched by only 135,000 people at any one time.
The ratings are 10 per cent lower than for the cable channel it replaced which was called Discovery Health.
And only 45,000 of those watching are women aged 25 to 54, the audience the channel is being aimed at.
Miss Winfrey, 57, has urged patience and supporters say ratings will improve when the chat show host begins appearing more regularly herself towards the end of the year.
She will still be busy filming “The Oprah Winfrey Show” for the ABC network until September, but will then be able to devote more time to her own channel. That will include having her own show two or three nights a week.