The availabilities of trace elements in calcareous soil which is the main soil type in northwest of China are low.Irondeficiency chlorosis is a common phenomenon to kiwi in calcareous soil.Leaves and soil samples of the normal and chlorosis kiwifruit trees were studied with nutrient diagnosis method.Except for calcium,the concentrations of nitrogen,phosphorus,potassium,copper and iron in leaves of chlorosis trees were significant lower than that of normal trees,especially copper and iron,contents of which in leaves of chlorosis trees were 6685% and 6561% of normal trees,respectively.Iron was an essential element for chlorophyll synthesis,which showed chlorosis was related to iron deficiency.There were no significant differences with soil nutrients content between normal trees and chlorosis trees,which indicated the deficiencies of nutrients in leaves attribute to the obstruction of nutrients to absorb by root,and there was no significant relationship with the abundance and deficiency of soil nutrients.Absorption ability of trees could be improved through foliage fertilization,regulating soil pH value,moisture,aeration and so on.