A flexible spine fixing structure is provided. The flexible spine fixing structure is used for fixing a first vertebra and a second vertebra. The flexible spine fixing structure includes a first flexible element and a second flexible element. The first flexible element includes a first flexible portion, a first fixing portion and a second fixing portion. The first fixing portion and the second fixing portion are connected to two end of the first flexible portion respectively and used for being fixed to the first vertebra. The first flexible portion has a first hole and a second hole. The second flexible element includes a second flexible portion, a third fixing portion and a fourth fixing portion. The third fixing portion and the fourth fixing portion are connected to two end of the second flexible portion respectively and used for being fixed to the second vertebra. The second flexible portion is passed through the first hole and the second hole.一種撓性脊椎固定結構。撓性脊椎固定結構用以固定於一第一椎節及一第二椎節上。撓性脊椎固定結構包括一第一撓性元件及一第二撓性元件。第一撓性元件包括一第一撓性部、一第一固定部及一第二固定部。第一固定部及第二固定部分別連接於第一撓性部之二端並用以固定於第一椎節。第一撓性部具有一第一貫孔及一第二貫孔。第二撓性元件包括一第二撓性部、一第三固定部及一第四固定部。第三固定部及第四固定部分別連接於第二撓性部之二端並用以固設於第二椎節,第二撓性部穿設於第一貫孔及第二貫孔。100...撓性脊椎固定結構106...第一撓性元件108...第二撓性元件110...第一撓性部112...第一固定部114...第二固定部116...第一端118...第二端120...第一貫孔122...第二貫孔124...第二撓性部126...第三固定部128...第四固定部130...第三端132...第四端134...貫孔A1、A2、A3、A4...夾角H1...高度L1、W1...間距