Abstract: aminoguanidinium 1-methyl-5-nitriminotetrazolate have been prepared by reacting aminoguanidine bicarbonate with 1-methyl-5-nitriminotetrazole which is obtained from 5-aminotetrazole through methylation and nitration.Reaction temperature, time, material ratio, alkali concentration and the amount of solvent were studied about effects on the methylation reaction, and the optimized yield was 44% which was 3% higher than literature values.Then,Nitration dosage, reaction temperature and time were also investigated into nitrification yield,and the optimized yield was 81%. the products were characterized by 1HNMR,IR,MS,etc.