This study examined the relationship between eye-tracking speed and sight interpretation (SI) primarily through the recording of eye-tracking-based target domain (TD) fixation. First, the 9-point track calibration was created for a non-invasive investigation. Second, in less than 30s, the participants finished the SI output of the preheated materials, and the instructor assigned the subjects 10 points based on the SI standard, and the teacher scored the subjects according to the SI standard (10 points). Finally, following eye rest, the subjects took 45s to finish the formal SI on the test experimental items. This study explores the relationship between the average speed of eye-tracking TD and SI performance and then gains insights into the effects of meta-emotional, emotional, and cognitive factors on the speed of eye-tracking TD and argues that corresponding speed, emotional, and cognitive strategies should be adopted to obtain the SI speed of eye-tracking TD. Eye tracking rate is affected by meta-emotions and emotions. Too slow or fast eye tracking speed highlights the brain's inertial cognition of SL information and overspeed cognition, void cognition, and negative-effect cognition. Abnormal eye tracking TD rate is an essential factor causing low SI scores of interpreters.