Apparatus for measuring blood coagulation

Disclosed is an apparatus for measuring blood coagulation. The apparatus uses an optical mouse sensor (125) to detect rotation of a coded disc (123), such that measurement is accurate in a measurement process, thereby enabling a device to have high accuracy and testing efficiency and favorable interference-resistance. Moreover, the apparatus employs a magnetic attraction effect to draw, by means of drawing forces of a first magnetic body (111) and a second magnetic body (112), a cup cover (1222) to stir a blood sample in a cup body (1221), converts, by means of the coded disc (123) and the optical mouse sensor (125), a complex microscopic biological change occurring during blood coagulation into a displacement signal, and acquires and processes the same to form a thromboelastogram. The invention simplifies a test process, and reduces workload of an operator and costs.