Recyclable blanking plug in oil tubing

The invention relates to the technical field of a blanking plug device in an oil tube and provides a recyclable blanking plug in the oil tube. The recyclable blanking plug comprises a back off sub, a fishing head, an unsetting mandrel, an upper slips barrel, a rubber packer mandrel, a lower slips seat, a lower joint, a lower mandrel and a locking pawl, wherein an upper mounting shaft cavity opening downwards is formed in the back off sub; the fishing head is arranged in the upper mounting shaft cavity in a sleeving manner, and the inner wall of the lower part of the fishing head is fixedly mounted together with the outer wall of the upper part of the unsetting mandrel; long shaft holes are formed uniformly in the circumference of the upper part of the unsetting mandrel. The blanking plug is reasonable and compact in structure and convenient to use, a steel wire running tool is used during setting and unsetting, and setting and unsetting operation is simple and feasible, larger gripping force can be provided u