Height-adjustable tea strainer

The invention relates to the technical field of tea strainers, in particular to a height-adjustable tea strainer which comprises a tea strainer body, a center rod, a sliding pipe and an elastic clamping ring, the tea strainer body is provided with a cavity with an upward opening, an upper cover covers the opening in the upper end of the cavity, and a plurality of lower water permeable holes communicated with the cavity are formed in the outer wall of the tea strainer body; two elastic rods abut against the cup cavity of the teacup, so that a center rod is fixed in the cup cavity of the teacup,the height-adjustable tea strainer can adapt to teacups with different diameters along with stretching and retracting of the elastic rods, the center rod can be fixed without any adjustment of the cup cavity or the cup cover, the height-adjustable tea strainer can be directly used, and the universality of the height-adjustable tea strainer is greatly expanded; and meanwhile, a sliding pipe can bedriven to ascend or desce