Mosaic virus disease can be alleviated, but it is difficult to cure. It is suggested to buy medical moroxydine hydrochloride root dressing or root irrigation in outpatient department. Applying biological bacterial fertilizer in spring and autumn. Trim separately when pruning, and the tools should be disinfected with disinfectant. Pay attention to supplement fertilizers with medium and trace elements such as iron and zinc. The tree can be sprayed with moroxydine hydrochloride, virus A, virus 1 and 2, ningnanmycin, Nong Kang 120, amino acid foliar fertilizer containing trace elements such as iron and zinc, etc.