Al-Ti-C refining master alloys, reaction among whose composing elements are exothermic, are fabricated by laser induced self-propagating high-temperature synthesis. Results show that TiC particles average size is less than 1 μm and distributes dispersedly and TiAl3 is strip-like in Al-50(TiC) master alloys. The master alloys have excelent refining efect on pure aluminium. The aluminium grain average size decreases to less than 150 μm after adding 0.1% the master alloys which have good resist-decline ability. There are a sharp endothermal peak and a obtuse exothermic peak on the differential scanning calorimetry (DSC) curve. The reaction process of self-propagating high-temperature synthesizing the master alloys is analyzed.