The combined application of nitrogen(N)with zinc(Zn)can promote the Zn availability and the transformation between chemical forms of Zn in the root-soil interface，thereby promoting the absorption and accumulation of Zn in winter wheat.This paper investigated the effect of organics secreted by roots of winter wheat on the availability of Zn in soil under the combination of N and Zn application to provide a theoretical basis for the N-Zn combination improving the bioavailability of Zn in soil via root exudates of winter wheat.The calcareous soil was used as the test material for soil culture test.Two fertilizer levels(0，N 0.2 g/kg+Zn 10 mg/kg)and nine organics treatments(no organics，cis-aconitumic acid，giant cetaceic acid，3，5-phenylalanine，glycine，cyclolacic acid，hydroxyproline，glucose-1-phosphate，fumaric acid)were set up，and soils was sampled at 0，30，90 and 150 days to analyze pH，available Zn and the chemical forms of Zn.At 30 days，the exogenous giant cetaceic acid，3，5-phenylalanine，glycine，cyclolacic acid，hydroxyproline and glucose-1-phosphate significantly reduced pH in soil under no applying N and Zn，and the cis-aconitumic acid，giant cetaceic acid，3，5-phenylalanine，glycine，cyclolacic acid，hydroxyproline and glucose-1-phosphate significantly reduced the pH in soil under N-Zn combination.At 30 d，exogenous organic matter had no significant effect on the available Zn concentrations in soil under no applying N and Zn，but exogenous cis-aconitumic acid，3，5-phenylalanine，glycine and hydroxyproline significantly increased the available zinc concentrations in soil under N-Zn combination treatment.Meanwhile，exogenous cis-aconitumic acid，3，5-phenylalanine，glycine and glucose-1-phosphate had no significant effect on the chemical forms of Zn in soil under no applying N and Zn，and the four organics significantly increased the concentrations of carbonate-bound and organic- bound Zn in soil，as well as the proportion of carbonate-bound Zn，but reduced the proportion of residual Zn under N-Zn combination.Exogenous organics could reduce soil pH，promote the transformation of Zn from insoluble Zn to carbonate- bound and organic-bound Zn under N-Zn combination，thereby improving the availability of zinc in soil.