This study focuses on a carbonaceous fine-grained gold ore from Shaanxi Province, with a gold grade of 5.55 g/t, where native gold is extensively encapsulated by carbonaceous and siliceous minerals, hindering efficient   enrichment. To address the challenges in gold extraction caused by the complex mineral structure and achieve deep carbon removal and gold recovery, а "curing roasting-cyanidation leaching"process was employed to investigate gold enrichment during progressive oxidation. Key findings include: raw ore (particle size of -2 mm) cures into bricks under 15 MPa pressure; roasting the bricks at 550 °C for 16 h achieved a carbon removal rate of 87.06 %:; under optimized conditions (grinding fineness of -0.074 mm accounting for 75 %, eco-friendly gold leaching agent dosage of 2 000 g/t. pulp density of 40 %, pH > 11, and 24 h cyanidation at room temperature), the maximum gold leaching rate reached 91.68 %. This research provides technical guidance for the industrial utilization of carbonaceous fine-grained gold ores.