The utility model discloses an anticorrosive wear-resisting case. The manufacturing and designing technical field who belongs to the valve. It includes interior case (2) and overlaps and locate outer case (1) on interior case (2), interior case (2) are made by ceramic material, outer case (1) is made by metal material. This case is applied to and is contained during solid material spurts the ball valve, and the wearability and the corrosion resistance of ball valve can be guaranteed to the interior case that ceramic material made, and simultaneously, the intensity of ball valve can be guaranteed to metal material's outer valve body, and anti solid thing fluidic assaults