This paper aims to explore the impact of different task scenarios on the perception of warning information on the display interface of the roller cab. Through three typical task context interfaces and warning stimulus materials such as Adobe Photoshop for quality inspection, transition and homework, the parameters of pupil diameter, first entry time and target total reaction time pupil diameter, first entry time and target total reaction time indicators on 20 subjects were collected by adopting. the Tobii X3-120 eye tracker. The EyeTracking analysis module of the ErgoLAB human- machine-loop synchronization platform was used to collect and extract valid data, and SPSS repeated measures analysis of variance was used to test the difference of data.In the QC task situation, the average pupil diameter of the subjects is the highest, and the average values of the first entry time and the total target response time are relatively the lowest. That is, the warning stimulus degree and perception effect are the strongest in this situation, and the perception efficiency is the highest, while the perception of interface warning information is the lowest in the context of transition tasks.the task context will have an impact on the visual perception of the warning information on the interface, and different task contexts have different warning perception effects. From the perspective of task situation, this research provides a certain reference for the perception research and design optimization of the warning information of the display interface of the engineering vehicle cab.