Using Gleeble-1500D thermal simulation equipment, the effect of Fe content on the low temperature combustion synthesis process of Fe-Ti-C system and microstructure features of the products were studied in this study. The results show that the ignition temperature of Fe-Ti-C system can be decreased greatly under the action of electric field and great thermal density. Moreover, the effect of Fe on the low temperature combustion synthesis process becomes greater with the increasing of Fe content. And the ignition temperature becomes higher, the delay time of ignition becomes shorter and the highest temperature becomes higher with the increasing of Fe content. Similar to high temperature combustion synthesis, the products of low temperature combustion synthesis consist of TiC, Fe and a litter Fe2Ti. However, the amount of TiC is the greatest and the size of TiC particles is the smallest at 45wt% Fe content.