Valve rod shaft sealing structure of valve

The utility model belongs to the technical field of valve rod shaft sealing, and particularly relates to a valve rod shaft sealing structure of a valve, which aims at solving the problems of untight sealing and inconvenience in disassembly and assembly caused by abrasion during O-shaped ring packing sealing, and adopts the technical scheme that the valve rod shaft sealing structure comprises a bottom plate, and a mounting plate is fixed on the side surface of the top end of the bottom plate; a sealing mechanism located in the extrusion block is arranged on the side face of the valve rod shaft, and a lubricating mechanism with the bottom end attached to the side face of the valve rod shaft is arranged in the extrusion block. The pressing plate is pushed to move downwards by screwing the fixing bolt on the pressing plate downwards, and the pressing plate pushes the extrusion block to move downwards when moving downwards, so that the extrusion block further extrudes the sealing mechanism arranged in the extrusio