The invention discloses a thrombelastogram instrument, which comprises a structural module comprising a structural framework and an auxiliary motion execution mechanism, wherein the auxiliary motion execution mechanism is used for realizing cup loading, elevating and cup unloading motion of a test cup; a measure module comprising a measure assembly, a cup holder assembly, a level meter and a temperature controller; a signal control module comprising an amplification plate and a main control board; a storage processing module comprising host computer hardware; and an auxiliary module comprising a power supply, a switch, a button connecting line and an interface. The thrombelastogram instrument has the advantages of strong integrated level of a system, high automation degree and good anti-interference performance, clotting panorama of patients can be comprehensively detected, curative effect of certain medicines relative to blood clotting can be monitored, medicine or blood transfusion scheme can be adjusted, treatment scheme can be rapidly determined, patient cost is simultaneously reduced, detection period is shortened, treatment time is saved, and life span can be prolonged.