Abstract: The growth process of plateau summer vegetables was affected by various meteorological disasters in the eastern Hexi region of Gansu.In order to understand the disaster characteristics,we defined and classified composite meteorological disaster.Based on the Analytic Hierarchy Process（AHP）,the weights of different types and degrees of disasters were determined.Through the establishment of an evaluation model,the composite disaster intensity was evaluated and analyzed during 2010-2021.The results indicated that composite disasters had the characteristics of high frequency,significant impact,and significant extremes.High temperature heat damage was the most typical in areas along plains and deserts.In addition to sustained drought,the impact of composite disasters would be further intensified.From the perspective of composite disaster intensity,the disaster intensity was significantly higher than that in other regions.In spring stubble,the composite disaster intensity along the desert area changed significantly(with a tendency rate of 0.029·a^-1),which had seriously threatened industrial development.The evaluation results were further validated through the experiment of garlic seedlings in cold mountainous areas.In response to the impact assessment and distribution characteristics of composite disasters,the production of summer vegetables on the plateau still needs to be tailored to local conditions.