The invention discloses an intravascular multilayer bare 
stent system, and relates to the technical field of 
medical equipment. According to the technical points, a support body is composed of a firstframework and a second framework, and the first framework and the second framework are of a cylindrical net structure formed by weaving framework lines made of memory 
alloy or 
biodegradable polymer materials, overlapped with each other and opposite in spiral rotation direction. Rotary connecting rings are arranged at the upper sections, the middle sections and the lower sections of the first framework and the second framework; 
metal wires are connected to the inner wall of the rotary connecting ring; a hole-sealing strip-shaped film is connected to the side wall of the 
metal wire. The mesh sealing of the multilayer bare 
stent can be adjusted, so that the 
aneurysm cavity and the interlayer are isolated from 
normal blood flow, 
normal blood flow is prevented from leaking into the 
aneurysm cavity and the interlayer, 
blood flow in the 
aneurysm cavity and the interlayer is restrained, blood clots or thrombi are promoted to be formed in the aneurysm cavity and the interlayer to 
atrophy the aneurysm, the pressure in the aneurysm cavity is reduced, the 
potential risk that the aneurysm is increased and ruptured is reduced, and stable and guaranteed treatment purpose is achieved.