A foldable ladder cart including a main shaft, an upper loading board, a lower loading board, an upper brace, and a lower brace is provided. The upper loading board is connected to the main shaft, and is pivotally movable between a first and a second position. The lower loading board is connected to the main shaft, and is pivotally movable between a third and a fourth positions. The upper brace is connected to the upper loading board and the main shaft; the lower brace is connected to the main shaft and the lower loading board. When the upper and the lower braces are in supporting positions, the upper loading board and the main shaft are in the first and the third positions. When the upper and the lower braces are in folded positions, the upper loading board and the main shaft are in the second and the fourth positions.