Abstract: Euonymus tanakae is a typical coastal plant with highly ornamental value and excellent stress resistance. To accelerate the application and popularization of E. tanakae and increase the amount of seedlings, the branches of 15-year-old E. tanakae were used as experimental materials, exploring the effects of different substrates, cutting types and concentrations of NAA solutions on the rooting of cuttings under the automatic spraying condition. The results showed that both clean river sand and the mixed substrate of peat and perlite in volume ratio of 1∶3 had good cutting effects, with the average rooting rate and the number of new roots being more than 52.00% and 4.53 per cutting, respectively. The rooting of cuttings with heels was significantly better than that of cuttings without heels. The rooting rate of the main branches with heels was 65.33%, and the average number of new roots was 7.33 per cutting. The rooting rate of the lateral branches with heels was 64.67%, and the average number of new roots was 7.40 per cutting. The cuttings treated with 200 mg·L⁻¹ concentration of NAA solution had the best rooting effect, with the rooting rate and the number of new roots reaching 68.00% and 5.30 per cutting, respectively, both of which are higher than those in other concentration treatments. NAA solution could promote rooting of cuttings about 10 days earlier, Therefore, 200 mg·L⁻¹ concentration of NAA solution with clean river sand or mixed substrate can be used to treat cuttings in production.