PROBLEM TO BE SOLVED: To protect a seedling from eating damage by insect pests such as a slug by exterminating the slug, etc., without spraying a chemical such as an insecticide when the seedling of trees and plants is raised. SOLUTION: This protecting tool for the seedling is formed into a cylindrical shape made of copper or a copper alloy and having both opened ends and is obtained by thrusting a lower cylindrical end 10b in a state thereof housing the seedling N on the inside into raising soil M for the seedling N, inserting the cylindrical end 10b and installing the protecting tool in the raising soil M. An insect returning part 11 forming an outer flange state surrounding an upper cylindrical end 10a is provided in the upper cylindrical end 10a.
