Clinical photothermal therapy continues to encounter significant challenges, including systemic toxicity risks associated with intravenous drug administration and inadequate photothermal specificity in the targeted lesion area, particularly concerning the prevention of bone tumor recurrence. To address these issues, this study developed a photothermal functional composite bioceramic scaffold that integrates a Si₃N₄ matrix known for its excellent antibacterial properties, black glass SiOC exhibiting photothermal characteristics, and bone-inductive graphene oxide (GO). A mapping model was established to correlate the properties of the GO/KH570-H/Si₃N₄ precursor slurry with the parameters of the SLA additive manufacturing process. Following sintering at 1300 ℃, a GO/SiOC/Si₃N₄ composite ceramic was successfully obtained. Under irradiation with 808 nm near-infrared light at an intensity of 1 W/cm², the temperature of the leather-coated composite scaffold reached 47.8 ℃ within 10 minutes. This innovative approach presents a promising solution for precise photothermal therapy in postoperative bone tumor repair.