The second most prevalent cancer in the world and the fifth most common malignant tumour is gastric carcinoma. It is thought that several factors, including genetics, epigenetics, and environmental impacts, contribute to the development of gastric cancer. One of the main pathogenic variables associated with stomach cancer risk has been identified as inflammation. There are currently few methods to treat the gastric carcinoma. Therefore, an alternative plan is urgently needed. Explaining the importance of curcumin derived from Curcuma longa Linn. in stomach cancer is the goal of this review. According to recent research, Curcumin (CUR) has a great effect against stomach mucosal injury brought on by non-steroidal anti-inflammatory medicines, gastric mucosal injury in rats, stress haemorrhage, and Helicobacter pylori infection. In this review article, we have discussed the chemistry of CUR, the role of CUR in immunomodulation, and gastric cancer. We have also highlighted the various signalling pathway of gastric cancer where CUR work. By controlling miRNAs on gastric cancer and other relevant signal pathways, CUR exhibits notable anti-inflammatory and anti-cancer properties. In future there are more research work will be done on CUR.