A device for automatically analyzing bacteria and fungi configured to conduct a blood culture and an identification and antibiotics-sensitivity test automatically and continuously, comprising: a blood culture unit for conducting the blood culture by culturing blood and detecting growth of microorganisms in the blood before analytical testing; a pretreatment unit for pretreating the culture liquid containing a blood sample after the blood culture; a nozzle for aliquoting culture liquid after the blood culture from the blood culture unit to the pretreatment unit; an analyzing unit for conducting the identification and antibiotics-sensitivity test; and an inoculation mechanism for filling the pretreated sample from the pretreatment unit into the analyzing unit; wherein the pretreatment unit includes a filtering mechanism which includes at least activated charcoal, carbon particles or an adsorption resin for removing components added into the culture medium at the time of the blood culture, which may interfere with the analyses which follow blood culture, a pH controlling mechanism equipped with a pH controlling reagent for controlling pH of a culture medium changed during the blood culture, a centrifugation unit for centrifuging a blood culture container after the blood culture, a cell suspension controlling unit for putting sediment including suspension of microorganisms in normal saline solution or special test solution to prepare a cell suspension, and a photometer for optically measuring the prepared cell suspension; wherein the cell suspension controlling unit is arranged for automatically controlling a microbial concentration after the blood culture to be constant and preparing the cell suspension so as to have a predetermined concentration, based on a measurement result of the photometer; and wherein the analyzing unit includes a device for culturing and measuring, a culturing unit for maintaining the culturing and measuring device at a constant temperature, a detection unit for optically measuring the culturing and measuring device, and a conveying unit for transferring the culturing and measuring device from the culturing unit to the detection unit. a blood culture unit for conducting the blood culture by culturing blood and detecting growth of microorganisms in the blood before analytical testing; a pretreatment unit for pretreating the culture liquid containing a blood sample after the blood culture; a nozzle for aliquoting culture liquid after the blood culture from the blood culture unit to the pretreatment unit; an analyzing unit for conducting the identification and antibiotics-sensitivity test; and an inoculation mechanism for filling the pretreated sample from the pretreatment unit into the analyzing unit; wherein the pretreatment unit includes a filtering mechanism which includes at least activated charcoal, carbon particles or an adsorption resin for removing components added into the culture medium at the time of the blood culture, which may interfere with the analyses which follow blood culture, a pH controlling mechanism equipped with a pH controlling reagent for controlling pH of a culture medium changed during the blood culture, a centrifugation unit for centrifuging a blood culture container after the blood culture, a cell suspension controlling unit for putting sediment including suspension of microorganisms in normal saline solution or special test solution to prepare a cell suspension, and a photometer for optically measuring the prepared cell suspension; wherein the cell suspension controlling unit is arranged for automatically controlling a microbial concentration after the blood culture to be constant and preparing the cell suspension so as to have a predetermined concentration, based on a measurement result of the photometer; and wherein the analyzing unit includes a device for culturing and measuring, a culturing unit for maintaining the culturing and measuring device at a constant temperature, a detection unit for optically measuring the culturing and measuring device, and a conveying unit for transferring the culturing and measuring device from the culturing unit to the detection unit.