The filming of the film began on March 5, 1979 on the Hardangerjkulen Glacier near Finse, Norway. The filming of "Star Wars" encountered a heavy rain in Tunisia once in 50 years, and the film crew also encountered a local 50-year-old in Norway. During the blizzard, the temperature was as low as minus 28.9 degrees and the snow was 5.5 meters thick. The cast and crew were once unable to leave the hotel. On March 13th, the crew moved to Elstree Studios in London to continue shooting. The studio has 60 sets of the film, more than twice the number of "Star Wars" in the upper part. Since Studio 3 was devoured by fire during the shooting of "The Shining" in January, the shooting cost of the film increased from the original 18.5 million US dollars to 22 million. By July of the same year, the shooting investment had exceeded 30 million.
During the filming of the film, several creators took extremely strict confidentiality measures regarding the truth that the Black Warrior is Luke’s father. Even David Bowros, who played the Black Warrior, knew nothing about the true identity of the character. At the beginning of the film Before the screening, only Lucas, Kershner, Hamill and voice-over James Earl Jones knew the key dialogue. In order to keep the opening plot intact, Lucas hopes to put the cast list at the end. Although this is not uncommon, it was unusual at the time. Before the release of "Star Wars", the American Screenwriters Guild and Directors Guild approved Lucas' application. , But when it came to the film, they asked Lucas to pay a fine of 250,000 US dollars and tried to prevent the film from being released. To protect Kershner, who was pursued by the directors’ union, Lucas paid the fine and angrily quit the screenwriters’ union. , Directors’ Guild, and American Motion Picture Association.
