The invention relates to a grafting and replanting method for a tea tree. The method comprises the following steps: sawing rootstocks; selecting scions, and carrying out combined scion treatment by using gibberellin with a concentration of 50mg/L and kinetin with a concentration of 50mg/L; splitting the rootstocks; peeling the scions; inserting the scions; carrying out bagging; and carrying out shading. With the grafting and replanting method provided by the invention, grafting survival rate reaches at least 90%; underground pest prevention and control effects are good; old tea garden can quickly put into production; after grafting, picking starts in the fifth month and is 10 to 15 days earlier than planting; and the method also has the advantages of low energy consumption, simple operation and easy popularization.