The Cylinder buckling is the essential part of major maintenance for turbine body that directly determines the safe and stable operation after then. Hefei Branch Company of WOM created performance method of Double Cylinder Buckle during the Unit 5 body maintenance work of Xiexin Power Plant Taicanggang and gained great success.  This method is the first in the history of Xiexin Power Plant and also an innovative production of turbine body major maintenance in Wenergy group.