The utility model belongs to the technical field of an electric power tool and discloses a pair of special pliers for testing the micro water content of SF6 gas. The utility model mainly has the technical characteristics that the pair of special pliers for testing the micro water content of the SF6 gas comprises vise grip pliers with jaws, and the front ends of the two jaws are provided with semicircular press rings. When the pair of special pliers for testing the micro water content of the SF6 gas is used, flange plates of two joints are aligned, the two semicircular press rings are pressed at both sides of the two flange plates along a conduit, and the vise grip pliers are forcibly clamped. Because the vise grip pliers have a self-locking function, the two flange plates are tightly pressed together, the contact area of the press rings and the flange plates is large, and the phenomenon of air leakage because of pressing deflection is not easy to cause; moreover, the working efficiency is greatly enhanced, and 20 to 40 minutes are needed originally; after the tool is adopted, only 10 to 20 minutes are needed; and furthermore, the damage to the flange plates and a sealing gasket cannot be caused.