This study was conducted to determine the status of salinity,pH and fertility (OM,total nutrients,and available nutrients) of representative organic cultivation substrate samples from greenhouse vegetable field in gobi desert regions,Gansu province.The results showed that：(1) In general,the total salt contents in cultivation substrate were over high in Linze experimental region,with total salt contents in all samples being above medium salinity evaluation index (>5 g/kg).All the individual salt ion contents in Linze experimental region were significantly higher than in Suzhou experimental region,with much higher chloride salinity in Linze experimental region.(2) The pH values in most cultivation substrate samples were beyond proper pH ranges for vegetable growth.The percentage of samples with pH value being higher than 6.5 was 75.0% in Linze experimental region and 100.0% in Suzhou experimental region.(3) The organic matter contents were in range of medium to low levels in most cultivation substrate samples.The sample percentages with OM content being lower than 40% was 66.6% in Linze experimental region and 55.0% in Suzhou experimental region,respectively.(4) Contents of NO-3-N in most cultivation substrate samples were at high evaluation levels in Linze experimental region,but at medium and low evaluation levels in Suzhou experimental region.Contents of available P and K in cultivation substrates in Linze and Suzhou experimental regions were generally at high evaluation levels.In Linze and Suzhou experimental regions,available S,Fe,Zn and B contents were at high evaluation levels,available Cu at relatively high evaluation level,and available Mn above medium evaluation levels.(5) Cultivation substrates in Linze and Suzhou experimental regions were abundant in the amount of total N,P and K,seriously deficient in the amount of available N,extremely abundant in the amount of available P,and moderately abundant in the amount of available K.The calculated amount of available N was significantly lower than the estimated vegetable N requirements,much higher amount of available P and available K in cultivation substrates than vegetable requirements,indicating that the nutrient management should focus on N and to less extent on K as the extremely high K requirements by vegetable.