1. A method of data uplink synchronization between a mobile terminal and a server, comprising: step 1, a mobile terminal sending an uplink synchronization request of an address book to a server; step 2, the server returning an uplink synchronization request response of the address book to the mobile terminal; step 3, the mobile terminal sending to the server address book data needing to be synchronized; step 4, the server, according to a number of the mobile terminal, judging whether the address book data of the number exists in the server; if the address book data of the number exist, executing a step 5; otherwise, executing a step 6; step 5, the server, according to the received address book data, modifying the address book data stored in the server one item by one item and executing a step 7; step 6, the server storing the received address book data; and step 7, ending.