The invention relates to a remote digital ultrasonic / variable frequency antiscale and descaling equipment, which comprises an inductance power, a digital module, a digital LCD, an ultrasonic power, a cable, a transducer, a protecting cover, a ring piezoelectric ceramic chip, a metallic amplitude-variable rod, a main body, a flange, a metallic energy collecting block, a pipeline, a pipeline front flange, a rear flange, and an inductance coil. The ultrasonic-wave main body has an ideal inclined angle range of 30 to 60 degrees to the pipeline, and is welded on the pipeline, the transmission of the ultrasonic is same with the direction of flow of the fluid, this is not only helpful to the transmission of the ultrasonic and is not liable to produce a standing wave and a reflection wave, but also reduces the repeated impact of the cavitation effect of the ultrasonic to the pipeline, so the service life of the pipeline is prolonged. Multiple turns of helical wires connected with the variable frequency circuit board are wound on the industrial pipeline. The invention utilizes the cavitation effect of the ultrasonic to act on the dirt on the inner wall of the pipeline with a lateral wave and a vertical wave, so as to descale equipment and the pipeline at long and short distance. The invention utilizes variable frequency electromagnetic field to perform variable frequency antiscale and descaling treatment on the pipeline fluid remotely. The equipment can remove scale deposit in advance, and can prevent scaling, as a result long pipes will have no scale, thus the smoothness of the whole pipeline is ensured. The invention saves water resource, improves the equipment efficiency, reduces the maintenance cost and prolongs the service life of the equipment, thus digital controlling and automatic protection can be realized.