With the rapid developments in marine aquaculture, the bacterial pathogen has been recognized as a serious cause of disease. The urgency of implementing diagnosis to control the spread of bacterial disease and safety of aquaculture products is presently the dominant issue to be concerned. The aim of this review is to compile the dispersed literature published about different aspects of the detection technology of bacterial diseases occurring in aquaculture worldwide. The current status in the development of rapid diagnosis of aquaculture bacterial diseases will provide useful information on the establishment of detection standards and development of diagnosis products.