Totally enclosed through -type transformer insulation guard shield. Relate to the insulation guard shield field. The utility model provides an exquisite, the sealed effectual and stable high totally enclosed through -type transformer insulation guard shield of structure. Be equipped with the upper seal circle on the terminal surface of the lower halfbody of last halfbody orientation, be equipped with the lower seal circle down on the halfbody orientation terminal surface of last halfbody, the upper seal circle is relative with the lower seal circle to be set up, first pipe no. 1 is equipped with towards the central one end of body and is the pipy upper seal of semicircle cover no. 1, be equipped with upper sealing cushion piece no. 1 between the outer wall of upper seal cover no. 1 and the end of upper seal circle, second pipe no. 1 is equipped with towards the central one end of body and is the pipy lower seal of semicircle cover no. 1, insulation guard shield still is qualified for the next round of competitions the catch of cable and goes out the wire locking ring with being used for cup jointing including the inlet wire catch that is used for cup jointing the inlet wire cable, the utility model discloses have simple and convenient, the sealed effectual and stable high characteristics of mounting means on the whole.