This paper introduces a kind of hollow optical fiber rotation connector.Structural design block diagram are presented

and on the realization of the function of rotating and loss control are described.At the same time by relevant environmental experiment validate the reliability of the structure.Realized the high speed（≥ 1.25Gb/s）

large aperture（≥ Φ 60mm） 、 low rotating variables（≤5dB） of hollow fiber optic rotary connector.