The invention discloses an inorganic composite grouting material for working face fault passing advance pre-reinforcement. The inorganic composite grouting material is obtained by well mixing base material, coal ash and shortcut carbon fiber or base material, Portland cement, coal ahs and shortcut carbon fiber at normal temperature. When in use, inorganic composite grouting liquid can be obtainedby well mixing and stirring water and the inorganic composite grouting material according to a mass ratio of 0.3-0.4:1; initial setting time of the inorganic composite grouting liquid is longer than 5h, 28d uniaxial compressive strength is not lower than 45MPa, bending strength is not lower than 7 MPa, and residual compressive strength is increased by higher than 30% when compared with that of conventional PO42.5 cement grouting materials. The inorganic composite grouting material can meet long-drill-hole pre-grouting reinforcing process requirements in the aspects of fluidity, curing time, binding strength, environment friendliness and safety, can effectively improve strength of coal rock around fault and ensure a working face to safely and quickly pass the fault.