On the basis of the theory of Cognitive Interpreting Studies，this study puts forward to the method of TD eye-tracking experiments in SI and basically constructs the paradigm of eye-tracking TD research in interpreting. The researchers have done the experiments to their 83 undergraduate interpreters of non-English majors for their eye-tracking trajectories in SI. The analyses conducted on the big data through the method of eye-tracking tests to the testees, comparison and SPSS, show that 1) the TD occupying rate of their eye-tracking trajectories is higher than that of their TD offset track, and further, the higher the rate of their TD occupying, the higher their average scores will be, vice versa; 2) the lower the rate of their regression in terms of their eye-tracking trajectories is, the higher their scores will be; otherwise, the higher the rate of their regression is, the lower their scores will be. The coping strategies are 1) TD occupying strategies: eye-tracking trajectories should close to TD; 2) zero regression strategies: eye-tracking trajectories should move forward, not backward; 3) flexible cognitive strategies: positively cognize the contents of TD, activate the information of LTM, develop the effects of WM and rapidly give accurate equivalences of SL information.