Rice husk ash (RHA) is a supplementary cementitious material (SCM) and precise study has been done so as to be be incorporated in cement concrete as a partial replacement of cement. This paper reviews the insertion of Rice husk ash (RHA) in ordinary Portland cement in cement concrete by some certain amount and its pozzolanic activity due to which innovation and advancement can be seen in physical, mechanical and structural properties of the concrete. Rice husk ash gives two effects in the mortar or cement concrete i.e. filler effect and pozzolanic effect. This study reviews the pozzolanic contribution of RHA towards cementitious system. The percentage replacement of the rice husk concrete used in the earlier studies were taken as arbitrarily like 5%, 10%, 20% so on to observe and calculate the total effect of the rice husk ash. Previous studies gave clear cut result about the better performance of rice husk ash concrete than conventional concrete. The hydration reaction which occurs due to cement and the additional pozzolanic reaction of RHA with the hydrated products generated earlier innovates and advances the various properties of rice husk ash concrete.