In the early 2000s she persuaded the people infected with AIDS from Haemophilia medicine and their families and began the pro bono lawsuit against the pharmaceutical companies.

In the 2016 general election she defeated the incumbent Kim Jong-hoon becoming the first liberal parliamentarian to represent Gangnam District in two decades.

[3] Jeon is best to known to the public through her work as the head of Carpool-Taxi TF of her party's Policy Planning Committee.

[4] A month after losing her re-election in 2020, Jeon was appointed by President Moon as the chair of Anti-Corruption and Civil Rights Commission.

She has called for proactive public administration in fulfilling its mandate of fighting against corruption and securing citizens' civil rights.