The script originally included a kissing scene between Seo Jang-geum and Min Jung-ho, but Lee Yeong-ae, who plays Jang-geum, felt it wasn't necessary and that the drama did not need such scenes in order to generate viewer ratings. Hence the scene was removed.
Lady Han (Yang Mi-kyung) was supposed to die in episode 18 but due to fan protests, the director delayed her death.
Park Eun-hye was originally cast to play the role of Seo Jang-geum, but later when it was confirmed that Lee Yeong-ae would be acting in the drama as well, Park was recast in the role of Lee Yeon-saeng.
Song Yun-Ah, Kim Hyun-Joo was considered for role of Dae Jang-Geum.