The influences of preparing conditions on mechanical properties of the white mud (WM) / Konjac glucomannan (KGM) composite film (MKG) were investigated by orthogonal experiments. Zeta potential analysis and DSC were used to characterize the properties of WM and MKG. The results show that the mechanical properties of MKG films can be enhanced through proper modification. Optimized processing parameters of MKG film are described as following: the ratio of KGM, WM, benzoic acid, sodium dodecyl benzene sulfonate(LAS) and stearic acid was 100:14:2:0.24:0.14. 1.00 (wt) % of KGM powder was swelled in deionized water with WM modified by stearic acid, benzoic acid and LAS, stirred for 1.5 hour at 60°C and then paved on plate and dried at 40°C for 15 h to form the MKG film.