The utility model discloses a sand-blasting thread protector of a drilling tool connector, which is applied to protecting a screw thread of a drilling tool in the sand blasting process. The sand-blasting thread protector comprises a lining pipe, and the key technique thereof also comprises a rubber screw thread, and the rubber screw thread and the lining pipe are integrated. The sand-blasting thread protector of the drilling tool connector has convenient processing and manufacture, low manufacturing cost, good protecting performance and good popularization and use value.