Circular Stapler fires into the tissues of alimentary canal two staggered (interior and exterior) rings of titanium staples and cut off inside tissue with the circular blades simultaneously. Our stapler is suitably used for end-to-end and end-to-side tissue anastomoses in alimentary canal organs such as esophagus, stomach , entera etc, especially at the low rectal and high esophagus not suitable for hand work. It also can be used in the circular cutting operation of hemorrhoids.