The invention provides an FPC surface-mounting method having distance measurement and error correction functions. A material grabber moves an FPC board to a position above a lower-position camera, so that the lower-position camera captures a mark image on the FPC board. Then a deflection device performs a preset deflection action and deflects the FPC board to a next position so as to enable the lower-position camera to capture another mark image on the FPC board. Therefore, a problem that a camera cannot capture coordinate information of a large-size FPC board accurately is overcome. The calibration distance between the two mark images in the spreading state of the FPC board is pre-stored in a central processor and a capturing distance between the two mark images on the FPC board is calculated during the operation process. The capturing distance and the calibration distance are compared. If the capturing distance is smaller than the calibration distance, the FPC board has bending deformation. At this moment, the central processor controls of the material grabber to place the FPC board to a FPC board recycling point and not to execute the surface mounting action, so that the FPC board having bending deformation is prevented from being pasted to a carrier board and waste generation due to FPC surface mounting position inaccuracy is avoided.