An automatic analysis apparatus that is capable of aligning the timing of sample dispensing and efficiently carrying out tests of a plurality of items. An intermediate disk (disk) is set so that an A-cycle for carrying out an operation for pretreatment and B-cycles for carrying out operations for dispensing a sample to a reaction disk and a flow analysis mechanism serving as test mechanisms are combined to use n-units of the B-cycles as a dispensing operation cycle time period of the sample. Therefore, the timing of sampling can be efficiently aligned so that the test of an item having a short analysis cycle can be carried out during the test of an item having a long analysis cycle, and so that the tests of an item having a large number of requests can be carried out during the test of the item having a small number of requests.