A 37-year-old woman visited our emergency department with severe pain from the upper abdomen to the left lumbar region and frequent vomiting. She was diagnosed with gastric volvulus by contrast-enhanced CT and underwent emergency endoscopic repair. One month after this procedure, percutaneous endoscopic gastric wall fixation was performed using non-absorbable thread (2-0 PROLENE ® ). The patient has had no recurrence since this time. Gastric volvulus is a disease in which the stomach is twisted beyond the physiological range. The disease rarely causes acute abdomen, but is important because it may lead to strangulation, necrosis, or perforation. Treatments for percutaneous endoscopic gastric wall fixation include nasogastric tube decompression, endoscopic repair, and surgery, but there have been few reports of this condition in Japan. Here, we report our experience of treatment of percutaneous endoscopic gastric wall fixation using a non-absorbable thread for gastric volvulus.