The invention discloses a method for quickly shaping the artistic modeling of large-size garden plants. The method comprises the following steps: selecting landscape plant materials, planting the selected plant materials in a container for maintenance and management, dividing the modeling into different modules, binding the plant materials according to the modeling modules, modeling, and trimming till the modules are shaped; digging up, conveying, assembling and performing colonization and shaping on the modules. The method, disclosed by the invention, is short in shaping time, plants growing fast, such as ligustrum quihoui, can be formed in one year, plants growing slowly, such as juniper, can be shaped generally in three years, and the obtained large-sized plants are natural, magnificent and attractive in modeling, flexible and diversified in form, high in survival rate, long in use time, and suitable for beautifying and greening various sites.