Automatic analyzer

An automatic analyzer comprising:

• a reagent storage unit that stores a reagent container in which a reagent is accommodated;
• a reaction promotion unit that installs a reaction container with the reagent and a sample dispensed and maintains the same at a predetermined temperature;
• and
• an unused container providing unit that stores an unused reaction container to be conveyed to the reaction promotion unit,
• wherein the reagent storage unit and the unused container providing unit are arranged on one side and the other side in a left-right direction, respectively,
• wherein a central position of the reaction promotion unit is located between a central position of the reagent storage unit and a central position of the unused container providing unit in the left-right direction, and is located on a rear side from a central position of the reagent storage unit and a central position of the unused container providing unit in a front-rear direction,
• wherein a cover covering above the reaction promotion unit is provided with a fitting portion fitted into the reaction promotion unit and a handle formed on an upper surface side,
• wherein the fitting portion includes at least a first fitting portion located on the one side, a second fitting portion located on the other side, and a third fitting portion located between the first fitting portion and the second fitting portion in the left-right direction,
• wherein the handle is positioned between the first fitting portion and the second fitting portion in the left-right direction and on a rear side of the third fitting portion in the front-rear direction, and
• wherein the first fitting portion and the second fitting portion are high in positioning functionality and the third fitting portion is low in positioning functionality.