Abstract: 【OBJECTIVE】The effects of citrate and malate on the pakchoi seed germination, young buds growth and embryo cell membrane permeability. 【METHOD】The pakchoi seeds soaked with different concentration solution of citrate and malate were placed in culture dishes, then were to measure germination rate and other indexes. Embryo cell membrane permeability was determined using inductivity measurer.【RESULTS】(1) when citrate concentration was up to 64 mmol/L, or malate concentration to 32 mmol/L, the germination rate and index of pakchoi seed soaked in organic acids solution were notably lower than contrast. (2) When organic acids concentration were 128 mmol/L, the weight and length, stem length of pakchoi soaked citrate solution was 50%, 60.5% and 47.4% of contrast respectively. Correspondingly, the values soaked malate solution was 26.8%, 44.1%, 30.0% respectively. (3) The effects of organic acids on pakchoi seed memberane permeability were significant, and were stronger with increased of organic acids concentration. 【CONCLUSION】The two organic acids all inhibited the seed germination and young buds growth of pakchoi. Moreover, the inhibition of malate was stronger than of citrate at the same concentration.