A cylindrical tungsten/glass complex optical component is proposed for the transmission of high energy X-ray. The cylindrical tungsten/glass complex optical component uses tungsten film to reflect and focus high energy X-ray. Using a Matlab program, the line absorption coefficients of metal Cu and the tungsten/glass complex optical component are calculated. Theoretical calculation results of metal Cu agree with common databases and the saltation of the line absorption coefficient at the absorption edge proves the high- precision of this program. Calculation results of the optical componentare consistent with experimental results, which prove the optics can filter low-energy X-ray.