The present invention is preparation process of collagen-based surface wound repairing membrane possessing tissue induction function, and features that the collagen-based surface wound repairing membrane modified physically and chemically has introduced gelatin-base slow releasing microsphere containing cell growth factor, pores of 20-200 micron size, pore rate not smaller than 80 %, tensile strength not smaller than 1 MPa, pH 5.0-6.0, and excellent degradation and biocompatibility. It has the functions of absorbing wound diffusate, induce the adhesion, proliferation and differentiation of autocell, induce the growth of blood vessel, release cell growth factor to the wound for long time, speed wound healing and avoid scar. The present invention is used for injury, burns, scalds, skin ulcer, etc.