Kasugamycin is an ideal agent for the prevention and treatment of various bacterial and fungal diseases, and has the functions of prevention, treatment and growth regulation. It is not only a special antibiotic for the prevention and treatment of rice blast, but also effective against rice thin stripe disease, citrus gum disease, sand skin disease, kiwifruit canker disease, pepper bacterial scab, celery early blight, kidney bean wilting disease, rhizoma flax leaf spot, It has a good control effect on the prevention and treatment of watermelon bacterial angular spot, peach tree gum disease, scab, and perforation.