We tested the usability of unattended delivery vehicles, found problems, and proposed solutions to improve the user experience.During the experiment, we invited the subjects to experience the whole process after wearing the eye-tracking device: 1. using their mobile phones to make a reservation for the delivery car. 2. going downstairs to make a delivery. Observation, survey interviews, and data analysis were used to identify shortcomings in the product. In the end, we have given the reference ideas and design plans. Due to the limited space, we have only excerpted some of the improvement ideas and plans, and welcome your criticism and correction.