N,N-Diethyl-hydroxylamine　(DEHA)　is　a　novel　salt-free　reductant　used　in　the　reprocessing　of　spent　fuel,　this　paper　reports　on　gamma-rays　damage　of　0.1-0.5　mol　L-1　DEHA　irradiated　5-25　kGy　and　its　radiolytic　products.　DEHA　is　relative　stable　against　radiation,　its　radiolysis　rate　increases　with　the　dose,　but　decreases　with　increasing　initial　DEHA　concentration.　The　main　radiolytic　products　are　hydrogen,　ethene,　methane,　acetaldehyde　and　ammonium　ion,　their　quantities　increase　with　initial　DEHA　concentration.　Hydrogen　and　liquid　radiolytic　products　quantities　increase　with　the　dose,　the　dependence　of　hydrocarbon　quantity　on　dose　relates　to　original　DEHA　concentration　and　dose.