An endoscopic kit for ligation which is capable of safely, surely and continuously performing ligation. The kit comprises an inner cylinder, an outer cylinder having at least two bamboo-shoot steps at an outer periphery of a tip end thereof, and a sliding cylinder between the inner and outer cylinders. A notch is provided on the outer cylinder to extend from the tip end thereof to a maximum diameter portion thereof while a projection having a dimension and steps corresponding to those of the notch is provided on a tip end of the sliding cylinder to be fitted into the notch. O-rings are mounted on an outer periphery of a tip end of the inner cylinder and step portions of the outer cylinder. When a fluid is introduced into an annular space rearwardly of the sliding cylinder to move the sliding cylinder forward, the O-ring at the outer periphery of the tip end of the inner cylinder is caused to fall off the inner cylinder and the O-rings at the step portions of the outer cylinder are moved to one-step-ahead step portions.