At the molecular level, the aforesaid results illustrated that the potential therapeutic effects of these four active ingredients, especially the SERPINE1-Emodin complex and the COL1A1-Quercetin complex, for gastric cancer not only possessed Vina binding energy < −5.0 kcal·mol−1 but also had LibDockScore > 100. The gene discussed is COL1A1; the disease is gastric cancer.