Anisakiasis is a parasitic disease caused by an infection of Anisakinae larvae. It occurs when the live larvae are introduced to the human gastrointestinal tract by eating infected raw fish. The endoscopic features of the gastric mucosa adjacent to the worms include redness, edematous, which are sometimes hemorrhagic and erosive. Gastric anisakiasis forming submucosal tumor, due to unobserved endoscopy, larva is very rare. 2 cases of submucosal tumors caused by gastric anisakiasis were found by endoscopic examination. The well demarcated mass lesion was seen in the submucosal layer of the stomach using endoscopic ultrasonography, and confirmed by laparoscopic wedge resection.