Vegetable production using grafted plants was first initiated in Japan and Korea in the late 1920s. Grafting has become popular especially in fruit-bearing vegetables grown in greenhouses. In 1990, the area using grafted plants accounted for 59% of the production area of watermelons, cucumbers, eggplants, tomatoes and melons. Grafting is very effective to control soil-borne diseases and nematodes, but it is laborious and requires time, space and materials. Recently, production of grafted plants has become difficult for farmers due to the aging of farmers and labor shortage. Therefore, studies on the development of a rapid method and of instruments for grafting began in 1987 in Japan, and various grafting methods and instruments were released. Acclimation of the grafts has been studied and survival rate of the plants grafted by the new grafting methods or instruments has increased.