Salt mining ship and salt dredging vessel are the most promising mining equipment for the development of the Saline Lake deposit. Saline Lake solid deposit or the surface brine cover, or its crystal is filled with brine, can generally meet the requirements of mining process, and more choice of suction type salt mining, water as the medium to achieve salt ore mining and transportation. According to the seam of soft and hard, the ceiling lifting salt dredger used different types of loose ore plant salt dredger, such as cutter, spiral ore accumulation type, chain gear, the wheel and bucket type and hydraulic punching sampling and other.