PROBLEM TO BE SOLVED: To provide a method for producing more amount of healthy seeds in the production stage of seeds for applying to horticultural production of vegetables and flowers or the like with the intention for efficiently controlling seed-infective disease injuries. SOLUTION: This method for producing healthy seeds comprises treating foundation seeds with an effective microbe having antagonism to pathogen of seed-infective disease injuries. The effective microbe can be applied to the foundation seeds, plants in seed growing or soil for seed growing. As the effective microbe microbes belonging to the genus Bacillus having antagonism to pathogenic bacteria belonging to the genus Alternaria and microbes belonging to the genus Pantoea and the genus Leclercia having antagonism to pasthogenic bacteria belonging to the genus Xanthomonas can be used.
