Degradable and extratracheal outer suspending support and indirect 3D printing method thereof

The invention discloses a degradable and extratracheal suspending support and an indirect 3D printing method thereof. The support is provided with several C-shaped cylindrical ring structures, the C-shaped cylindrical ring structures are arranged in an array mode, the opening angle of the cylindrical rings is 90 degrees, and the surface of each C-shaped cylindrical ring structure is in an arc shape, so that the extratracheal support shows fluctuating heave-and-sunken structures as a whole; on the C-shaped cylindrical ring structures, penetrating holes are punched at every 90 degrees on the protrusion structures. The indirect 3D printing method of the support comprises the steps of using a 3D printing technology to manufacture resin parts formed by internal dies and external dies, cleaning clearly the resin parts, using biological silica gel to conduct rollover on the resin parts, preheating the obtained silica gel die, afterwards adding a medical biological degradable material in a silica gel external die, conducting vacuum pumping treatment after the material is totally fused, afterwards putting the fused material into a silica internal die to fix the material, naturally cooling, demolding the material after the material cools down to obtain the degradable and extratracheal suspending support. The manufactured degradable and extratracheal suspending support has high mechanical performance and surface roughness, and has an in-vivo degradable property.