The obstacle of continuous cropping has become an important problem in vegetable production at present. To improve the soil physicochemical properties and microbial biomass, two measures were applied respectively with paddy-upland rotation and soil mulching with solarization in the summer in suburban areas of Shenzhen. The results shows that both of two measures can improve the soil nutrition, especially the content of available potassium in soil, and can reduce soil-borne pathogens respectively. The method of soil mulching with solarization can significantly increase the content of soil microbe, especially the amount of bacteria and actinomycetes, while the effect of paddy-upland rotation on soil microorganism is less. This indicates that these two improvement measures may be a useful attempt to overcome the problem of vegetable continuous cropping obstacles and deserve extension and practice.