The invention discloses a dock slipway ship elevator comprising a pair of operating platforms, a pair of lifting devices, a base, a drive control device, and a travelling device. The lifting devices are disposed at two ends of the upper plane of the base. The operating platforms are connected with the lifting devices respectively in a one-to-one correspondence manner. The travelling device is disposed at the lower plane of the base. The drive control device is disposed on the base and is connected with the travelling device and the lifting device. The lifting device comprises a primary guide, a secondary guide, a tertiary guide and a cylinder. The drive control device comprises an oil tank, a gear pump, a master controller, a motor and an upper controller. The dock slipway ship elevator allows for multi-story operation; operating area is enlarged and efficiency is improved; the dock slipway ship elevator can move in any direction and is flexible to operate, convenient to use and safe and reliable.