Under conventional conditions the inner dyeing parameters for fast growing Chinese Fir (Cunninghamia lanceolata), such as permeable direction of dyestuff solution, moisture content of specimens, dyestuff solution consistence, permeable agent amount, steeping time, and solution permeability were studied. Each factor’s influence on permeability was analyzed through a series of single factor experiments and variance analysis. The results showed that the solution permeable direction,[WT5,5”BZ] specimen’s moisture content and dyestuff solution content and dyestuff solution consistence had more effect on permeability, but soaking time and permeate agent amount had less effect.