The invention discloses a portable sulfur hexafluoride sampling device for power equipment. The portable sulfur hexafluoride sampling device comprises a base body, the base body is internally providedwith a thick slideway and a thin slideway, the thick slideway and the thin slideway are coaxially connected, a slide block is inserted in the thick slideway, a screw tube is screwed at the outer endof the thick slideway, an air bag is connected with the tail end of the screw tube in a sealing manner, a sealing plug is clamped at the outer end of the slide block, a bypass is further arranged in the base body, one end of the bypass is communicated with the middle part of the thin slideway, the other end of the bypass is communicated with the thick slideway, the base body is further internallyprovided with a vacuum cavity, the vacuum cavity is internally provided with a piston, a pull rod is installed on the piston, the inner end of the vacuum cavity is communicated with the inner sectionof the thin slideway through a by-road, a connecting piece is installed on the outer section of the thin slideway, a slide plug is arranged fixedly at the inner end of the slide block, a spring is installed between the slide block and the thick slideway, a magnetic block is installed on the slide block, an electromagnet is installed on the thick slideway, and a main button and a minor button are arranged on the base body. The portable sulfur hexafluoride sampling device for the power equipment samples rapidly, is simple to operate, is high in sampling purity, is convenient to carry, saves labor in the operation, can be operated by one person, wastes less sulfur hexafluoride, and pollutes the environment less.