Abstract: Alfalfa in initial flowering stage was harvested and wilted for 0,8,or 32 hours ［with dry matter (DM) content of 27.15%,38.45% and 50.87%,respectively］,and ensiled with lactic acid bacteria+glucose at rates of 0,10⁵cfu/g+20g/kg, 10⁶cfu/g+15g/kg and 10⁷cfu/g+10g/kg. Results from the experiment indicate that alfalfa with lower water content (DM 50.87%) without additives has lower ammonia nitrogen content,conserves more DM,and produces more lactic acid.The languished alfalfa (DM 38.45%) ensiled with lactic acid bacteria+glucose has the best quality.The silage quality and integrated evaluation of alfalfa (DM 27.15%) with 10⁶cfu/g lactic acid bacteria and 15g/kg glucose is better than those of alfalfa with the other treatments.The silage quality of alfalfa (DM content,38.45% and 50.87% respectively) with 10⁷cfu/g lactic acid bacteria and 10g/kg glucose are simply the best.