Abstract:The research on the preparation of Frankia solution, seedling culture and inoculation was carried out. Results indicated that the collective amount of cells may be increased when the logarithm phase cells were used as the inoculum and regularly homogenizing and transplanting inoculum by the method of magnetic stirring were adopted during the cultural process of Frankia. The inoculative tests verified that the strain with the highest ability to infect Elaeagnus mollis Diels is SIB 1301118 isolated from Elaeagnus angustifolia L. other than SIB 1332281 isolated from Elaeagnus mollis Diels. The effectivities of inoculation for germinating seeds and the seedlings to be transplanted were seed soaking and root soaking in Frankia solution preparel respectively. Early inoculation was beneficial to the growth and nodulation of seedings. The fefectivity of late inoculation was bad. Sand-soil mixture (2:1) was properly suitable to the seed germination and seedling growth. The seedling growth and nodulative rate could be promoted when 1/4 Sileris-Yong nutrient solution was suppplimented regularly.