The invention discloses a mycorrhization seedling growing method of phoebe zhennan(Hemsl.)Yang. The method comprises the following steps of 1, selecting seeds, sterilizing and conducting acceleratinggermination; 2, conducting primary inoculating, wherein Pt mycorrhiza powder is uniformly mixed with flour to prepare a mixture, and the surfaces of the seeds selected in the step 1 are covered with the mixture to form pelleted seeds;3, selecting sandy soil of which the pH value is 5.8-6.5 as a seedbed, sorting the seedbed, digging striped furrows, and sowing the seeds in the step 2 into the furrows according to the spacing of 3-5 cm, and covering the furrows with soil; 4, conducting secondary inoculating, wherein 5 months after emergence, shallow ditches are dug among the striped furrows, thePt mycorrhiza powder is mixed with soil, the mixture is uniformly applied into the shallow ditches, and then the ditches are covered with soil. After the seeds of phoebe zhennan(Hemsl.)Yang are inoculated with a mycorrhiza agent, the seeds emerge early, the emergence rate and the plantlet formation rate are high, ectotrophic mycorrhiza formed by nursery stocks strengthens the absorbing capabilityof root systems, the absorption and utilization of nutritive elements in the soil are improved, the transplanting survival speed is high, and the survival rate is high; meanwhile, the mycorrhizationseedling growing method is easy and convenient to operate, low in cost and high in nursery stock quality.