LAMOST telescope needs 4000 optical fibers accurately positioned on focal surface of 1750mm diameter. The paper analyzed the strong points and shortcomings of the optical fiber positioning methods home and abroad. According to the principle of magnifying displacement with swing rod

the paper put forward the method of optical fibers positioning with parallel adjusting tables and swing rod

and designed the positioning structure of close range optical fibers in a small space. The analysis results make known

the structure can meet the needs of the every index to the optical fibers positioning for LAMOST telescope

the positioning precision can reach to ?0.04 mm

which supplies the basis of the choosing plan for LAMOST telescope.