Abstract: Rare-earth multi-fertilizer is a kind of new style fertilizer.It was studied and made in BaoTou Agricultural Institute.It can dissolve in water quickly.It made of macro-clement,micro-element and rare-earth element,even though rave-earth isn＇t fertilizer, it can stimulate plant to absorb fertilizer.Based on above mentioned and in order to proved the applied effect of the fertilizer on vegetable.A compared experiment had been done before the year 2008.With the fertilizer,compared with the other three fertilizers on cabbage,resuh showed： the yield of cabbage is evidently higher than the other three fertilizers.And in 2008, another compare experiment had been done on this fertilizer,and compared with the other three fertilizers on cucumber.Resuh showed：the yield of cucumber increased 38.2% than ck,increased 5.83% than multi-fertilizer, increased 22.15% than common practice fertilizer, increased 23.5% than LaiyiTong.The fertilizer can promote cucumber＇s plant height, stem diameter and leaf number.In plant height,increased 32.6% than CK; In stem diameter, increased 23.0% than ck.Analyzed it＇s economic benefit, yield/investment of rare-earth multi-fertilizer is 5.39,muhi-fertilizer is 4.49,common practice fertilizer is 2.41 ,LaiyiTong is 1.45. Result indicated：The economic benefit of rare-earth multi-fertilizer and multi-fertilizer are better than the other fertilizers too. This result is of applicable and referencing value for guiding farmer to utilize fertilizer.