Protective structure for processing machine cable joint

The utility model discloses a protection structure used for a processing machine cable joint, comprising a cable connection main end and a cable connection auxiliary end, the cable connection main end and the cable connection auxiliary end are plugged, opposite sides of the cable connection main end and the cable connection auxiliary end are provided with sealing assemblies, and the sealing assemblies are connected with the cable connection main end and the cable connection auxiliary end. The opposite sides of the two sealing assemblies make close contact, the surfaces of the cable connection main end and the cable connection auxiliary end are sleeved with an upper fixing block and a lower fixing block respectively, and the problems that according to an existing cable for a machining machine, a connector needs to be used at the connecting position, so that a connection relation is formed between the two cables, and the cable is damaged are solved. However, due to the fact that the sealing performance between