This invention provides a grafting device having a plate-like grafting member. The plate-like grafting member has a main surface on one side in the direction of its thickness and at least one plant holding part is provided on the main surface. The grafting device has a cutting part and a grafting part. The cutting part is so configured for cutting the stem of a plant to the grafted, the plant being held by at least one plant holding part of the grafting member. The grafting part is so configured for grafting portions of plants to be grafted with each other by grafting together at least portion of each plant that has been cut by the cutting part, in the state the plant that has been cut is held by the plant holding part.本發明之嫁接裝置具備板狀之嫁接用構件,該板狀之嫁接用構件係在厚度方向之一側的主面設置有保持嫁接用植物之至少1個植物保持部。嫁接裝置具備切割部及接合部。切割部之構成係將嫁接用構件之至少1個植物保持部所保持的嫁接用植物之莖予以切割。接合部之構成係在將經切割部切割之嫁接用植物的一部分以至少1個植物保持部保持之狀態下,藉由使嫁接用構件之至少一部分彼此接合,而使嫁接用植物之一部分彼此接合。