报道了芒果细菌性黑斑病（Ｘａｎｔｈｏｍｏｎａｓｃｏｍｐｅｓｔｒｉｓｐｖ．ｍａｎｇｉｆｅｒａｅｉｎｄｉｃａｅ）在广东省的发生情况和发病规律，对病原细菌的生理生化特性进行了测定，并进行了药剂防治试验。明确罹病秋梢为翌年病害的主要侵染来源，梢期嫩叶紫色至淡绿色时为感病的最敏感期，新梢期台风雨为病害发生流行的最重要的诱因。目前广东栽培的主要芒果品种的抗病性有一定的差异，生物农药ＢＧＳ与波尔多液等铜剂交替使用，可有效地防治芒果细菌性黑斑病 The occurrence and pathogenesis of Xanthomonas compestrispv. Mangiferaeindicae in Guangdong Province were reported. Physiological and biochemical characteristics of pathogenic bacteria were determined and drug control experiments were carried out. It is clear that the diseased autumn shoots are the main source of the disease in the following year. The tender shoots are the most sensitive period when the young leaves are purple to pale green. The typhoon rain at the shoot stage is the most important incentive for the epidemic. At present, the main mango cultivars cultivated in Guangdong have certain differences in their disease resistance. The biological pesticides BGS and Bordeaux mixture are used interchangeably to effectively control mango bacterial black spot