Combined two methods，field test and chemical analysis,the effect of different state of ammonium nitrogen fertilizer on salsola’s output and quality were studied.Then to determine the salsola’s scientific fertilizing amount of ammonium nitrogen fertilizer.The results showed that with fertilizing amount’s increase，the salsola’s output，fertilizer production of amino acid content，the content of vitamin C，could elevate in different degree.After reaching a certain fertilizer,the result could be reduced.Only the nitrate content reached a certain fertilizer，it could sudden get lower,then get elevate.The reasonable ammonium nitrogen fertilizer of artificially cultivated salsola should be 57.5 g/m2(570 kg/hm2) .