【Objective】 To effectively control citrus huanglongbing(HLB,yellow shoot disease),the distribution,damage and epidemics of the disease were investigated in Fujian Province.【Method】 The distribution of Candidatus Liberibacter asiaticus,the putative pathogen,the Asian citrus psyllid(Diaphorina citri),the insect vectors,and the incidence of HLB were investigated in 245 citrus-producing towns in 48 counties in Fujian Province.Polymerase chain reaction(PCR)assay was carried out to verify the existence of HLB in ...