Abstract:From May 2017 to September 2018, disease investigation was carried out on 4 winter jujube production bases in Hengyang area of Hunan province, and the disease samples with higher incidence rate were collected for pathogen identification. The results of the survey showed that the winter jujube diseases include gray mold, scab, brown head, anthracnose, jujube witches’ broom disease, shrinkage, chalk, and jujube brown spot in Hengyang area. Among them, the incidence of shrinkage disease and jujube brown spot disease is high, which is 9.2% and 20.8%, respectively, and the incidence of other diseases are less than or equal to 5%. Shrinking disease occurs mostly in the fruit expansion period, generally wrinkles appear from the waist, the diseased part becomes red and shrink, and later extends to the fruit stalk to the whole fruit; jujube fruit brown spot disease occurs mostly in the fruit expansion period, and the fruit surface has round brown spots, later the center of the lesions become grayish white, which does not affect the quality of pulp. The pathogens of shrinkage disease and jujube brown spot disease were identified to be Alternaria alternata and Cladosporium tenuissimum, respectively.