SL-AA1 Automatic Chemiluminescence Immunoassay System uses the magnetic microparticles based, Acridinium Ester (AE) direct chemiluminescence technology. The character of stable performance, fast report, convenient operation, and reliable results could make it fully applicable to various application environments of medical laboratories. The design orientation of SL-AA1 could not only meet the routine test requirements of medium and small hospitals but also provide supports to the assay development and STAT tests of large hospitals. The mature compatible system of instrument and reagent and strict system of metrological traceability could ensure the test results accurate and reliable.