The invention relates to the field of preparation of novel materials and in particular relates to a method for preparing a novel optical waveguide material. According to the technical scheme, the method comprises the following steps: dissolving fluorine-containing polycarbonate into cyclopentanone, and preparing into a solution with solid content of 55-65%; adding 1-5% of a photoinitiator, 0.5-1.0% of dodecyl mercaptan and 0.5-1.0% of hydroxyphenyl-S-triazine, uniformly stirring, coating on a mold, and standing at a temperature of 30-40 DEG C for 30-50 minutes; irradiating by an ultraviolet lamp for 10-15 minutes, thereby obtaining the novel optical waveguide material. The optical waveguide material prepared in the scheme has excellent solubility and machinable property, is excellent in comprehensive performance, good in stability and low in optical loss and has wide application prospects on optical waveguide devices.