The patent abstract shows that the invention discloses a method and a device for updating vehicle software, which comprises the following steps: a vehicle management platform receives vehicle data of a target vehicle and analyzes the vehicle data to obtain current vehicle information of the target vehicle; The vehicle management platform calls the software version management tool to generate a target software version list matching the current vehicle information and pushes it to the determined software refreshing device, so that the software refreshing device can update the whole vehicle software of the target vehicle according to the target software version list. It can be seen that the implementation of the invention can realize personalized updating of the whole vehicle software, which is beneficial to improving the accuracy of the test results obtained by testing the vehicle, and can also improve the driving experience of drivers on the vehicle, and it is unnecessary to confirm and update the whole vehicle software by manual means, thus reducing the investment of manpower and the time spent updating the whole vehicle software, and improving the updating efficiency of the whole vehicle software.