Abstract: 【Objective】 To investigate the feasibility of conductivity prediction of seed vigor in wheat spike parts and to provide a theoretical basis for rapid prediction of seed vigor. 【Methods】 The spike parts were all divided into six samples at 15 d (A₁₅), 20 d (A₂₀), 25 d (A₂₅), 30 d (A₃₀), 35 d (A₃₅), 40 d (A₄₀) and 45 d (A₄₅) after flowering under seven different harvesting time conditions, namely, B₁, B₂, B₃, B₄, B₅ and B₆, respectively, using Xinjiang main cultivar Xinchun 44 wheat variety as the material. A wide range of seed vigor levels was formed to investigate the relationship between electrical conductivity and seed vigor in the spike parts. 【Results】 The results showed that seed conductivity and seedling height, seedling fresh weight, seedling dry weight, germination potential, germination percentage, germination index, vigor index and simplified vigor index reached highly significant levels. The coefficients of determination (R²) of the regression models were 0.656 8,0.811 6, 0.864, 0.802 7 and 0.803 6. 【Conclusion】 Conductivity determination was simple and easy, and there were good linear relationships between conductivity and seedling height, seedling fresh weight, seedling dry weight,vigor index and simplified vigor index, respectively, so the method of conductivity determination was able to predict seed viability of the spike parts.