The invention discloses an intelligent car user personalized data cross-car synchronization method and device, and the method comprises the steps: receiving a user login request, obtaining a user login permission, judging whether the user login permission is true or not, carrying out the cloud account
data matching if the user login permission is true, and carrying out the cloud account
data matching if the user login permission is true. And sending
cloud user data to the current vehicle-mounted
client according to a matching result, and receiving user update data uploaded by the current vehicle-mounted
client, otherwise, clearing account information and vehicle setting information of last login and returning a factory value. According to the method and the
system, one account can access a plurality of vehicles, non-inductive automatic login can be realized only through multi-identity
authentication when the user changes the vehicle, the tedious operation of frequently inputting passwords is reduced, the user login process is simplified, user personalized
data synchronization is completed, all personalized setting information of the user is greatly improved, and the user experience is improved. All the vehicles logged in along with the account are set to be issued and reported, so that cross-vehicle login and
data synchronization of the account are realized, and the user experience is greatly improved.