PROBLEM TO BE SOLVED: To provide a lesion eliminating device capable of preventing plant growth from worsening by eliminating only lesion and leaving leaves when lesions occur on part of leaves. ! SOLUTION: A lesion eliminating device 1 includes a first arm part 10 and a second arm part 20 which are arranged oppositely to each other, and each connected on a connection part 30, and whose end sides approach or alienated to/from each other, with the connection part 30 as the base end. The first arm part 10 is provided with a projection part 11 projecting to the second arm part 20. The second arm part 20 is formed with a hole 21 allowing the projection part 11 to insert. The projection part 11 is inserted into the hole 21 when the end sides of the first arm part 10 and the second arm part 20 approach to each other. ! COPYRIGHT: (C)2014,JPO&INPIT