Non autoclaved aerated concrete (NAAC) had been developed by using aluminium paste as anaerated agent. Aluminium powder as much as 1.5% and 2.25%mass was added into the mixture, before itwas cured in room temperature for 28 days. NAAC was succesfully produced with this method with thedensity of I 020 and 1130 kg/m3 and the compressive strength of 2. 35 and 2. 74 MPa, respectively.