The invention discloses an efficient culturing method of pueraria lobata seedlings. A biennial or older kudzu vine mother plant is selected, an annual or biennial spear of the kudzu vine mother plantis taken as a cuttage seedling, the internode portion is cut into a small section, the length of 1.5-2.5 cm above the small section is maintained, the length of 6-8 cm of the cuttage portion below thesection is maintained, and the internode portion is cut into an inclined surface at an inclination angle of 30-40 degrees; the cut seedling is soaked in a soaking solution for soaking processing; sandy soil is mixed with assisting medium, high-temperature and high-pressure sterilization is conducted for 30-35 minutes under the temperature of 121 DEG C, sterilization is conducted, the mixed mediumis placed at room temperature for 2-3 hours, the mixed medium is prepared into a rectangular medium bed with the size of 1 m*5 m after the mixed medium is cooled down, the height of the medium bed is20-25 cm, and cuttage seedling breeding is conducted on processed seedlings on the rectangular medium bed with the size of 1 m*5 m. According to the method, the rootage of cuttage seeds is robust anduniform, there exist almost no short roots and slender roots, the yield and quality of subsequent pueraria lobata and the rooting rate and survival rate of the cuttage seeds are increased.