The invention discloses a rotary sample addition type fully-automatic blood coagulation tester. The tester which comprises a test system, a rotary sample addition system, an inclined reagent refrigeration system, a cleaning system and a cabinet is characterized in that the test system assembles four test channels which can simultaneously work; the rotary sample addition system comprises a rotary sample addition arm module, a sample addition probe module with constant temperature heating and liquid level probing functions, and a lead screw linear guide rail sample introduction control system; the inclined reagent refrigeration system which adopts an inclined mode to install a reagent bottle saves the reagent and avoids waste; and the cleaning system comprises an overflow type cleaning module and a double-channel peristaltic liquid charging and discharging system. The tester has the advantages of accurate test, accurate sample addition, reagent saving, long reagent preservation time, constant heating of the test system, high detection efficiency, simple operation, good cleaning effect, safe and efficient liquid discharge, and small noise.