The present invention provides an endoscope device, and a flexible printed circuit board assembly and a flexible circuit board thereof. The flexible circuit board includes a sensing module carrying portion, a first body portion, a second body portion, a third body portion, a fourth body portion, and a light-emitting component carrying portion. The first body portion is connected with one side of the sensing module carrying portion. The second body portion is connected with the other side of the sensing module carrying portion and corresponding to the first body portion. The first body portion and the second body portion are respectively located on opposite sides of the sensing module carrying portion. The third body portion is connected with the first body portion. The fourth body portion is connected with the second body portion, and the third body portion and the fourth body portion are respectively located on opposite sides of the sensing module carrying portion. The light-emitting component carrying portion is connected with the third body portion. The light-emitting component carrying portion includes a first carrying end portion connected with the third body portion and a second carrying end portion connected with the third body portion. The first carrying end portion and the second carrying end portion are separate from each other.本發明公開一種內視鏡裝置、柔性電路板組件及其柔性電路板。柔性電路板包括一感測模組承載部、一第一本體部、一第二本體部、一第三本體部、一第四本體部及一發光元件承載部。第一本體部連接於感測模組承載部的其中一側。第二本體部連接於感測模組承載部的另外一側且對應於第一本體部。第一本體部及第二本體部分別位於感測模組承載部的兩相反側邊。第三本體部連接於第一本體部。第四本體部連接於第二本體部，且第三本體部及第四本體部分別位於感測模組承載部的兩相反側邊。發光元件承載部連接於第三本體部。發光元件承載部包括一連接於第三本體部的第一承載端部以及一連接於第三本體部的第二承載端部。第一承載端部與第二承載端部彼此分離。
