Wellhead oil production sealing device

The utility model provides a wellhead oil production sealing device which comprises an oil production tree, an oil pipe, a working barrel, a smooth rod, a plunger and a sucker rod, wherein the oil pipe is communicated with the oil production tree, the working barrel penetrates through the oil production tree and the oil pipe, the smooth rod is capable of penetrating through the working barrel in an up-down moving mode, the plunger is connected to the lower end of the smooth rod and arranged in the working barrel in the mode of being capable of moving up and down along the smooth rod, and the sucker rod is connected to the lower end of the plunger. A sealing part of the wellhead oil production sealing device refers to sealing between the plunger and the working barrel. By means of the wellhead oil production sealing device, a traditional structure that a packing box is arranged at the upper end of an oil production tree to seal a smooth rod is changed, sealing of the smooth rod is achieved in a well, the metal motive seal wear of the smooth rod is low, the smooth rod does not need to be replaced frequently, workload is lowered, the production period is prolonged, and production efficiency of the oil well is improved.