An automatic analysis device comprising: a reaction cell configured to receive a sample and a reagent which are mixed and reacted; a first reagent dispensing mechanism configured to dispense a reagent to the reaction cell ; a first reagent vessel disposed on a track of the first reagent dispensing mechanism ; a reaction vessel configured to receive a sample and a reagent which are mixed and reacted; a second reagent dispensing mechanism configured to aspirate a reagent from the reaction cell and dispense the reagent to the reaction vessel ; a sample dispensing mechanism configured to dispense a sample and a reagent to the reaction vessel at a first dispensing position and the reaction cell positioned at a second dispensing position ; a second reagent vessel disposed on a track of the sample dispensing mechanism ; and a control unit configured to control the sample dispensing mechanism, characterised in the control unit being configured to, based on information on presence or absence of incubation of an analysis item, control the sample dispensing mechanism to dispense a sample and a reagent to the reaction vessel positioned at the first dispensing position in a case where the incubation is not required by the analysis item, and control the sample dispensing mechanism to dispense a sample to the reaction cell positioned at the second dispensing position in a case where the incubation is required by the analysis item. a reaction cell configured to receive a sample and a reagent which are mixed and reacted; a first reagent dispensing mechanism configured to dispense a reagent to the reaction cell ; a first reagent vessel disposed on a track of the first reagent dispensing mechanism ; a reaction vessel configured to receive a sample and a reagent which are mixed and reacted; a second reagent dispensing mechanism configured to aspirate a reagent from the reaction cell and dispense the reagent to the reaction vessel ; a sample dispensing mechanism configured to dispense a sample and a reagent to the reaction vessel at a first dispensing position and the reaction cell positioned at a second dispensing position ; a second reagent vessel disposed on a track of the sample dispensing mechanism ; and a control unit configured to control the sample dispensing mechanism, characterised in the control unit being configured to, based on information on presence or absence of incubation of an analysis item, control the sample dispensing mechanism to dispense a sample and a reagent to the reaction vessel positioned at the first dispensing position in a case where the incubation is not required by the analysis item, and control the sample dispensing mechanism to dispense a sample to the reaction cell positioned at the second dispensing position in a case where the incubation is required by the analysis item. based on information on presence or absence of incubation of an analysis item, control the sample dispensing mechanism to dispense a sample and a reagent to the reaction vessel positioned at the first dispensing position in a case where the incubation is not required by the analysis item, and control the sample dispensing mechanism to dispense a sample to the reaction cell positioned at the second dispensing position in a case where the incubation is required by the analysis item. <EOS>