SUCTION TOOL CONSTITUTING MEMBER

PROBLEM TO BE SOLVED: To provide a suction tool constituting member for constituting a suction tool which is prevented from being bulky.SOLUTION: In the suction tool constituting member, a cylindrical body (30) has a first ridge line and a second ridge line (30j) formed at such positions to flatten the cylindrical body (30) by being folded to project, and the cylindrical body (30) is switchable between a first state of being flattened and a second state in which a prescribed space is formed inside the cylindrical body (30) to be usable as a suction tool (10). A bend guide means is formed on at least one of the first ridge line and the second ridge line (30j) at the end part of the connection part side (30b) of the cylindrical body (30) when brought into the second state, to guide both sides holding an intermediate position of the first ridge line and the second ridge line (30j) to a bending shape while keeping the outer shape of a part including the intermediate position in a roughly flat shape.