Abstract: The influence of six kind of factors(NAA, 2,4-D, IBA, L-GLU, Oleic acid and CMC) on the growth of mycelia and exopolysaccharide content from Clitocybe maxima was studied. And the aim is to find the optimum concentration of the six factors. The results showed that NAA 0.4mg/L, 2,4-D 0.3mg/L, L-Glu 0.5～1.0mg/L, IBA 1.0mg/L, oleic acid 0.2～0.3mg/L, CMC 0. 3mg/L in the medium can remarkably enhance the growth of mycelia and the optimum concentration to exopolysaccharide is NAA 0.1mg/L, 2,4-D 0.3mg/L, L-Glu 1.0mg/L, IBA 1.5mg/L, oleic 0.4mg/L, CMC 0.5mg/L.

Key words: Clitocybe maxima, exopolysaccharide, mycelia yield, growth factors