The application provides a determination method and device for detecting missing time of track points on an expressway. The determination method comprises the following steps: determining a time
length distribution function corresponding to each track missing section of a target vehicle on an expressway based on the historical passing time length of each track missing section; determining a target function corresponding to all track missing sections based on each time
length distribution function and a target time length constraint condition corresponding to each track missing section; performing optimization solving on the target function to determine a target time length corresponding to each track missing section of the target vehicle; and determining missing
time information of track detection points corresponding to each track missing section of the target vehicle based on each target time length and
time information of track detection points corresponding to each track normal section of the target vehicle. The application can determine the missing
time information of track detection points corresponding to each track missing section of the target vehicle on the expressway, and improve the accuracy of completing the missing track points.