Kanchana was born on 15 February 1960 at Chao Phraya Yommarat Hospital in Suphan Buri, Thailand.

[3] In 1996, she was dragged by her father, who was facing allegations of corruption and incompetence, while being interviewed by the media after she called for his resignation.

[9] After the ban lapsed, she rejoined politics by filing her candidacy as the second party-list representative under the Chartthaipattana Party.

Kanchana was nominated for the position alongside fellow party member Theera Wongsamut.

[11] Prior to the convention, her brother Varawut Silpa-archa was speculated to lead the party.