Syringomyelia surgery is difficult. It usually takes 6~8 hours to perform surgery and needs sophisticated instruments to assist. For example, microscope, flip bed, intraoperative nerve detection and navigation System. In Taiwan, most of medical expense covers by national health insurance. For instance, hemostatic agent, tissue gel, and neuromonitoring, which cost NTD 100,000. On the other hand, the medical expense is more than one million dollar if going abroad. The most important is, the success of surgery depends on the skill of doctor. They have to remove complete compressed spinal cord and get rid of adhesions to restore normal circulation of cerebrospinal fluid.