The invention discloses a
body size measuring device, which comprises a measuring part, a moving
assembly and a linkage
assembly, and is characterized in that the measuring part comprises a height
measuring instrument, a shoulder breadth
measuring instrument and a
waistline measuring instrument; the moving
assembly comprises a
moving frame; the linkage assembly comprises at least one gear, flexible racks and fixed racks, wherein the flexible racks and the fixed racks are arranged in one-to-one correspondence, and the fixed racks are fixed to the movable frame. The gears are driven to rotate at the same angular speed through the linkage assembly, the height measuring instrument, the shoulder breadth measuring instrument and the
waistline measuring instrument are driven to move up and down, and meanwhile the tooth ratio of the corresponding gears is set to be the head-body ratio. The shoulder breadth measuring instrument and the
waistline measuring instrument can be moved to a position to be measured through the corresponding gears, so that corresponding data can be measured only by finely adjusting the shoulder breadth measuring instrument and the waistline measuring instrument, the
workload of movably measuring each group of height data is greatly reduced, and meanwhile, the measuring operation is simplified.