The present disclosure discloses a time synchronization method and apparatus, which belong to the field of the Internet. The method includes: counting down, when a data processing right of a network application is allocated to a first user, a processing time of the first user, the first user being a user in a user group; stopping, when the first user is disconnected and logs in to the network application again in a process of countdown, if a processing operation sent by a first user terminal is received, the process of countdown, to obtain a remaining processing time of the first user, the processing operation including an operation of abandoning the data processing right or a network data processing operation; and sending the remaining processing time to the first user terminal and a second user terminal separately, so that the first user terminal and the second user terminal separately display the remaining processing time, a second user being a user other than the first user in the user group. The present disclosure prevents an error from occurring in time displayed in the first user terminal and the second user terminal.