Aiming at the problem of rice bran promoting seed germination and seedling growth, rice bran was used as a substrate to explore its effects on rice seed germination and seedling growth, in order to provide a scientific basis for the promotion and application of rice bran recycling. Using rice bran and rice bran extract as substrates, and "Quanyou Xiang 88, Quanyou 1606, Quanyou 851" as experimental materials, three types of fertilization treatments were set up: Rice bran as basal fertilizer and rice bran extract soaking seeds are divided into three treatments: rice bran treatment (RT), rice bran solution treatment (RS), and conventional treatment (CT)., as well as three concentration gradients of basal fertilizer treatment with different concentrations of rice bran. Comparative analysis was conducted on the changes in germination indicators of rice seeds, agronomic traits of rice seedlings, root morphology indicators, and physiological indicators under different treatments to evaluate the fertilization effect and screen for appropriate fertilization concentrations and methods. The results indicate that rice bran treatment significantly shortens the seed germination process and improves sprouting efficiency in rice. Rice bran promotes seedling growth and optimizes physiological indicators. Rice bran extract and mixtures exhibit synergistic effects, enhancing resource utilization efficiency.