The invention provides a dry salt salting machine. Vibration of a vibrator and pressurization of a retractable squeezing device of a sealing box cover of a salting grid are mutually combined, so that gaps among foods can be sufficiently compacted, and the compactness of dry salt and the foods is increased; the reproduction of putrefactive bacteria, caused by the fact that the foods are in contact with the air, at an early period of salting dry salt foods is reduced, and the releasing of moisture of the salted foods is accelerated; the salting time is shortened and the quality of salted products is improved; a flow guide pipe can be used for storing water released from the foods in a salting process, so that salting liquid in each salting grid can flow to the other salting grids, so that the uniformity of flavors of the products in each salting grid is guaranteed in a salting production and processing process.