Torque detection method and device

The invention provides a torque detection method and device. According to the torque detection method and device, a function relation between the working torque of a sample processing box and the electrical parameters of a motor for driving the sample processing box to work is determined; the electrical parameters of the motor corresponding to the preset working torque threshold value of the sample processing box is determined according to the function relation, and an electrical parameter threshold value is formed; the electrical parameters of the motor which are corresponding to each to-be-tested processing box are detected according to the threshold value, and if the electrical parameters are within the range of the electrical parameter threshold value, it is determined that the workingtorques of the to-be-tested processing boxes are within a normal range; and if the electrical parameters are outside the range of the electrical parameter threshold value, it is determined that the working torques of the to-