Abstract: A polymer-based embolization device comprises a helix constructed by a linear structure. The linear structure is either a fibrous structure or composed of an A structure (1) and a B structure (2), wherein the A structure (1) is a protrusion on the linear structure and the B structure (2) is a pillar-shaped structure positioned between two A structures (1) for connecting the two A structures (1). The embolization device adopts a linear structural design and is integrally manufactured using a polymer material via a four-axis rapid forming system or via a compression method, thereby addressing issues of generation of image artifacts during CT and magnetic resonance imaging. The combination of design, material, and technique of the invention provides the device with improved flexibility and embolus formation, and can satisfy different clinical requirements.