In order to identify the pathogenic species on complications of “skin-rotting” disease and furuncu-losis disease , an isolation and identification test of pathogenic bacteria experiment from twenty symptoms and dying soft-shelled with weight between 100~1 000 g were conducted .And the main pathogens were verified to be Aero-monas hydrophila and Acinetobacter lwoffi by bacterial organizations smear , cultivation and purification , physiologi-cal and biochemical characterization and artificial infection .The drug-sensitivity tests showed that t...