Lee had no formal training in filmmaking. He was approached by
Park Kwang-su to write the screenplay for
To the Starry Island. Lee negotiated an
assistant director (AD) position as part of the deal and was promoted to first AD on the first day of the shoot when the original first AD failed to show up. The film was released in 1993. He later wrote
A Single Spark in 1995, which won Best Film at the 1995
Blue Dragon Film Awards. After his contemporaries encouraged him to finally step behind the director's chair, Lee made
Green Fish, a "critique of Korean society told through the eyes of a young man who becomes enmeshed in the criminal underworld", in 1997.
Green Fish won Best Film at
Blue Dragon Film Awards,
Dragons and Tigers Award at the
Vancouver International Film Festival and
NETPAC Award's Special Mention at the
Rotterdam International Film Festival. In 2000, Lee made
Peppermint Candy, chronicling a single man in reverse chronology through 20 years of South Korean history—from the student demonstrations of the 1980s to the film's 2000 release. The movie won the Special Jury Prize at
Bratislava International Film Festival and three awards at the
Karlovy Vary International Film Festival including the Don Quixote Award, Special Jury Prize and NETPAC Award. The film also won Best Film at the
Grand Bell Awards of Korea. In 2002, Lee released
Oasis about a mentally ill man and a woman with cerebral palsy, winning the
Silver Lion for Best Director at the 2003
Venice Film Festival.
Oasis was the Korean entry for
Best Foreign Language Film at the
75th Academy Awards. In 2003, it got the Chief Dan George Humanitarian Award at the
Vancouver International Film Festival and the
Venice International Film Festival's Special Director's Award,
FIPRESCI Prize and
SIGNIS Award. Lee won the
Baeksang Arts Award for Best Director.
Oasis was nominated at the 2005
Independent Spirit Awards for Best Foreign Film. From 2003-04, Lee was his country's minister of culture and tourism. On the political appointment, he said: In October 2006, Lee was awarded the Chevalier (Knight) order of the
Legion d'Honneur (Legion of Honor) by the
French government for "his contribution to maintaining the
screen quota to promote cultural diversity as a cultural minister." It was delivered to the French Embassy in Seoul by French Minister of Culture
Renaud Donnedieu de Vabres during an official visit. Lee's fourth film,
Secret Sunshine about a grieving mother who loses her son, was completed in 2007. At the
60th Cannes Film Festival, the film was in the competition category with lead actress
Jeon Do-yeon, winning the
''Prix d'interprétation féminine''. It was released in South Korea in 2007 and served as the country's nominee for
Best Foreign Language Film of the 2008
Academy Awards.
Secret Sunshine won Best Feature Film at the
Asia Pacific Screen Awards; Best Film and Best Director at the 2008
Asian Film Awards; Best Picture and Best Director at the
Korean Film Awards; Best Director at the
Director's Cut Awards; and Special Award at the
Grand Bell Awards. In 2009, Lee was appointed to the jury of the international competition at the
61st Cannes Film Festival along with
Isabelle Huppert,
Shu Qi and
Robin Wright. Released the following year, Lee's film
Poetry tells a of a suburban woman in her 60s who begins to develop an interest in
poetry while struggling with
Alzheimer's disease and her irresponsible grandson. It garnered positive critical reviews and won Best Screenplay at the
2010 Cannes Film Festival. The starring role was played by
Yoon Jeong-hee, who returned to the screen after an absence of 16 years. For this film, Lee won Achievement in Directing at the
Asia Pacific Screen Awards.
Poetry also won Best Film and Best Screenplay at the 2010
Grand Bell Awards and Best Director at the 2011
Baeksang Arts Awards. In 2018, Lee returned after an eight-year hiatus with the
psychological drama mystery film Burning, based on one of
Haruki Murakami's 17 short stories in
The Elephant Vanishes, "Barn Burning". The film premiered at the
71st Cannes Film Festival, winning the
Fipresci International Critics' Prize. It became the highest-rated film in the history of
Screen International's Cannes jury grid.
Burning was selected as Korea's nominee for
Best Foreign Language Film at the
91st Academy Awards,. It was the first Korean film to make it to the shortlist of the final nine of the award.
Burning also won the
Best Foreign Language Film at the
Los Angeles Film Critics Association,
Best Foreign Language Film in
Toronto Film Critics Association, and runner-up of the
National Board of Review's
Top Five Foreign Language Film. For this film, Lee won Best Director at the 2018
Buil Film Awards and 2019 KOFRA Film Awards. In addition to international acclaim, "Burning won the 2018
Grand Bell Awards for Best Film and FIPRESCI Award at the
Korean Association of Film Critics Awards. In March 2019, Lee won the
Best Director for
Burning and the Lifetime Achievement Award at the
13th Asian Film Awards. He also worked with Jason Yu's first film "Sleep" along with
Bong Joon-ho. In May 2025, Lee's next movie
Possible Love was announced with
Netflix boarding as the film's distributor. ==Political beliefs==