Kay Parker was reportedly introduced to the adult film industry during the late-1970s by actor John Leslie who suggested Parker to take part in one of Leslie's upcoming films at that time. Upon hearing that it was a pornographic movie, Parker reportedly declined the offer. But eventually she got eased into the industry by only playing bit parts in non-sexual roles, until porn director Anthony Spinelli talked her into doing her first sex scene in the 1977 film, Sex World.

She appeared in adult films during the late-1970s, and throughout most of the 1980s. Many of her devoted fans also greatly admire her for her acting talent, for being a more mature pornographic actress (she was in her 30s by the time she participated in hardcore sex scenes), as well for having large, natural 38DD breasts with big, pink nipples and a significant amount of dark pubic hair.

Her work basically consisted of vaginal and oral sex, dress up, lesbian encounters, and use of vibrators. Parker now works as a New Age metaphysical counselor and lecturer. In 2001, she wrote a book titled Taboo: Sacred, Don't Touch (ISBN 0971368406), in which she wrote about her early childhood, her career in the adult industry, and her experiences with the metaphysical.