Based on field experiment which was conducted in plastic greenhouse in Yan'an Shaanxi province,this paper researched system productivity and soil bio-characteristics of different cropping model between cucumber(Cucumis statirus L.) and other different crops.The results shown that after cucumber harvest,there was significant difference in different cropping model on soil bio-characteristics and system productivity.The system product productivity and system economic productivity were the highest in cropping model between cucumber and greengrocery,cucumber and cowpea,the second higher were in cropping model between cucumber and maize for green manure,cucumber and kidney bean.Soil respiration were highest in cropping model between cucumber and cowpea,the second higher were in cropping model between cucumber and maize for green manure,cucumber and kidney bean,cucumber and black bean for green manure,cucumber and follow,the lowest were in cropping model between cucumber and tomato,cucumber and greengrocery.That was the best way to reduce soil bacteria and epiphyte amount to follow lasting three or four months during summer season after cucumber harvest,the better method was planting cowpea or other legumina crops.