A synchronization method, applied to a terminal device in a wireless communication network, the synchronization method comprising: obtaining first clock information and second clock information; and performing clock synchronization according to the first clock information or the second clock information; wherein the obtaining the first clock information and the second clock information, comprises: receiving first system information from a first network device and obtaining the first clock information according to the first system information; and receiving first dedicated information from the first network device and obtaining the second clock information according to the first dedicated information; characterized in that the performing the clock synchronization according to the first clock information or the second clock information, comprises: performing the clock synchronization according to the second clock information within a first duration; and performing the clock synchronization according to the first clock information when the first duration expires; and in that the first clock information and/or the second clock information indicates a reference system frame number, SFN, a starting time point of the first duration is a position of the reference SFN, or the starting time point of the first duration is the position of the reference SFN plus a first delay. obtaining first clock information and second clock information; and performing clock synchronization according to the first clock information or the second clock information; wherein the obtaining the first clock information and the second clock information, comprises: receiving first system information from a first network device and obtaining the first clock information according to the first system information; and receiving first dedicated information from the first network device and obtaining the second clock information according to the first dedicated information; characterized in that the performing the clock synchronization according to the first clock information or the second clock information, comprises: performing the clock synchronization according to the second clock information within a first duration; and performing the clock synchronization according to the first clock information when the first duration expires; and in that the first clock information and/or the second clock information indicates a reference system frame number, SFN, a starting time point of the first duration is a position of the reference SFN, or the starting time point of the first duration is the position of the reference SFN plus a first delay. receiving first system information from a first network device and obtaining the first clock information according to the first system information; and receiving first dedicated information from the first network device and obtaining the second clock information according to the first dedicated information; characterized in that the performing the clock synchronization according to the first clock information or the second clock information, comprises: performing the clock synchronization according to the second clock information within a first duration; and performing the clock synchronization according to the first clock information when the first duration expires; and in that the first clock information and/or the second clock information indicates a reference system frame number, SFN, a starting time point of the first duration is a position of the reference SFN, or the starting time point of the first duration is the position of the reference SFN plus a first delay.