The purpose of this study is to evaluate the efficacy and safety of the new technique of HybridAPC in the treatment of Barrett.

After thermal ablation of Barrett's esophagus, stricture formation is reported in 5 to over 10% of patients. Submucosal fluid injection prior to ablation may lower the risk of stricture formation. The new technique of HybridAPC which combines submucosal injection with APC is considered to reduce the complication.

Inclusion Criteria:

1. Patients age is from 18 to 70.
2. Patients who were diagnosed with Barrett's esophagus.
3. Informed consent.

Exclusion Criteria:

1. Patient with severe cardiopulmonary dysfunction is unable to tolerated by endoscopy.
2. Severe bleeding tendency.
3. Poor compliance.
4. Patient is very ill and life expectancy is less than 2 years.
5. Esophageal varices or venous aneurysms, and no effective prevention or treatment for bleeding.
6. Severe esophageal stenosis.
7. Pregnancy.
8. Lesion is located in esophageal diverticulum or spread their diverticulum.