Automatic analyzing apparatus and automatic analyzing method

An automatic analyzing apparatus comprising:

• a plurality of reaction container holders which are independently movable along a circulation line having a single center of rotation, said reaction container holders being rotated around the single center of rotation, each of said reaction container holders holding a plurality of reaction containers and having a length which is no greater than 1/3 of a circumference of the circulation line;
• injector means, arranged along the circulation line, for injecting at least one of a sample and a reagent into the reaction containers;
• a photometric unit, arranged along the circulation line, for optically analyzing a concentration of chemical components of the sample injected into the reaction containers;
• rotating means for rotating the reaction container holders independently of one another;
• and
• a control unit for controlling the rotating means to cause the reaction container holders to be continuously rotated and to temporarily stop rotation of a respective reaction container holder when said respective reaction container holder comes to a position corresponding to the injector means, while at least one other reaction container holder is continuously rotated.