An ultrasonic rock salt continuous cleaning method and an ultrasonic rock salt continuous cleaning device are provided. The ultrasonic rock salt continuous cleaning method comprises, in a loading and pre-examining stage, loading and pre-examining a solid substance, where first sample information of the solid substance is collected； in a pre-cleaning stage, pre-cleaning the solid substance, wherein a cleaning fluid is applied； in an ultrasonic cleaning stage, ultrasonic cleaning the solid substance； in a drying stage, drying the solid substance, where the solid substance is dried in two stages, in a first stage, the solid substance is dried using a high-pressure air, and in a second stage, the solid substance is dried using hot air； and in an unloading and examining stage, unloading and examining the rock salts, where second sample information of the solid substance is collected.
