Ball valve with eccentric sealing structure

The invention discloses a ball valve with an eccentric sealing structure. The ball valve comprises a valve body, a valve deck, a valve seat, a valve rod and a valve cavity; the end, in the valve cavity, of the valve rod is in key connection with a ball body, the valve seat is located between the ball body and the inlet end side of the valve body, and the end, away from the ball body, of the valverod is provided with a driving device capable of driving the valve rod to circumferentially rotate or axially move; a left fixing block and a right fixing block are arranged at the upper end of the ball body, a left inclined face is arranged on the side, facing the right fixing block, of the left fixing block, a right inclined face is arranged on the side, facing the left fixing block, of the right fixing block, and the left inclined face and the right inclined face are parallel to form a parallelogram-shaped channel between the two fixing blocks; and the valve rod is fixedly connected with anarc-shaped protrusion mat