Her grandfather had the title of Phraya as a playwright who worked closely with King Rama VI.

Boonnak entered the entertainment industry at the age of 17 by following her friends to see a concert by the Air Force Band at Thung Maha Mek.

She was invited by an elder in the showbiz, so she immediately starred in her first movie in 1955, without having to go through an audition or study acting like today.

She also provided the Thai voice for the Grandmother Willow in the animated film Pocahontas in the same year.

In modern times Boonnak is well-acquainted with being a supporting character in many TV series, usually role as servant or grandma.