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Ultrafine Bubble technology is a new and emerging science, capable of infusing ultrafine bubbles in liquids for longer periods of time. Ultrafine bubble are extremely small gas bubbles in liquid. This paper discussed the application of ultrafine bubbles water for seed germination. Seed germination is the process from seed to a sprout in which the metabolic process of a plant gets activated after a period of dormancy. A high seed germination percentage is important for vegetable production. During germination process, the seeds rapidly recover physically from maturation drying, resume a sustained intensity of metabolism, complete essential cellular events to allow the embryo to emerge and prepare for subsequent seeding growth. Comparison experiments of seed germination rate were performed using distilled water and water containing ultrafine bubbles. This experiment utilized the dissolved oxygen concentrations of distilled water with approximately 8-9 and 20-24 mg/L. Rice, soybean, papaya and garlic seed was used as seed samples. The result indicates that the application of ultrafine bubbles water had an effect on seed germination rate.