Nitrogen-rich compounds are promising materials for gas generating pyrotechnic compositions. The synthesis and properties of nitrogen-rich compounds with high nitrogen content,good thermal stability and high formation enthalpy on the basis of tetrazole,tetrazine and furazan structures are reviewed. The synthetic routes of 3,6-bis(1H-1,2,3,4-tetrazol-5-yl-amino)-1,2,4,5-tetrazine(BTATZ),3,3′-azobis(6-amino-1,2,4,5-tetrazine)(DAAT),1,1′-dimethyl-5,5′-azotetrazole(DMATZ) and 3,6-bis(2H-5-tetrazol-yl)-1,2,4,5-tetrazine (BTT) are mainly discussed.