PROBLEM TO BE SOLVED: To provide a clip for grafting trees, which can surely hold a grafting state of a stock to a scion grafted to the stock. SOLUTION: This clip 10 for grafting the trees, which is used for nipping and holding a joining portion W3 of the stock W1 to the scion W2 in a state that a cut face of the stock W1 and a cut face of the scion W2 are contacted with each other, is characterized by comprising a pair of clip plates 20 rotatable on a rotation support set to a boundary between operation portions 21 for operating fingers and nipping portions 22 for nipping the joining portion W3, and C-ring-like springs 30 for energizing a pair of the clip plates 20 in such the directions that the nipping portions approach each other, and disposing at least one pair of the C-ring-like springs 30 so that both the side portions of each clip plate 20 are energized. COPYRIGHT: (C)2007,JPO&INPIT