Measuring tape structure

A tape measure structure disclosed by the present invention comprises a tape measure main body, a middle core column and a tape core, the tape core comprises a first end cover, a second end cover and a sleeve member, the first end cover is provided with a first limiting seat, the second end cover is provided with a second limiting seat, the middle core column comprises a middle core column main body, and two ends of the middle core column main body are fixedly provided with fixing caps. The fixing cap comprises a flange part and a protruding part, first annular teeth are arranged on the side wall of the protruding part, second annular teeth distributed in an annular mode are arranged behind the first limiting base, and the protruding part, on one side of the middle core column body, of the fixing cap is located in the second annular teeth. When the tape core is installed, the limiting piece consistent with the locking groove in shape can be arranged in the locking groove formed between the first annular tooth