Carbon dots of Charred AMK  • Alleviated gastric ulcer• Improved bleeding and inflammatory cell infiltration of the stomach• Decreased the IL-6, IL-1β, TNF-α, and MDA levels• Increased the IL-10, PGE2, and MUC5AG levels• Inhibited H+-K+-ATPase and pepsin activity• Improved microbial diversityCarbon dots of Charred AMK ameliorate gastric ulcer through the inhibition of the NF-κB/NLRP3 axis. This evidence concerns the gene TNF and gastric ulcer.