An apparatus for synchronization acquisition in a digital receiver, comprising: a pre-processing unit receiving an analog signal and converting the received analog signal to a digital signal; a reception synchronization unit comprising a plurality of different synchronization units, each performing a different synchronization process sequentially by receiving the digital signal, the reception synchronization unit controlling a start of the synchronization process of a next synchronization unit according to a presence or non-presence of the synchronization acquisition of a current synchronization unit; and a post-processing unit decoding the synchronization-acquired signal, characterized in that the reception synchronization unit comprises an automatic gain control unit, a coarse symbol timing synchronization unit, a fine carrier frequency synchronization unit, an integer carrier frequency synchronization unit, a sampling frequency synchronization unit, a scattered pilot extracting unit and a fine symbol timing synchronization unit, the fine carrier frequency synchronization unit recognizes a lock signal of the coarse symbol timing synchronization unit inputted from a lock signal control unit as a start signal of a fine carrier frequency synchronization acquisition, eliminates a frequency offset and phase jitter of the pre-processing unit, and converts a band pass digital signal to a baseband digital signal, the integer carrier frequency synchronization unit recognizes a lock signal of the fine carrier frequency synchronization unit inputted from the lock signal control unit as a start signal of an integer carrier frequency synchronization acquisition and compensates the signal processed by the fine carrier frequency synchronization unit by estimating an integer multiplication of an interval of a subcarrier closest to an initial frequency offset, and the sampling frequency synchronization unit recognizes a lock signal of the integer carrier frequency synchronization unit inputted from the lock signal control unit as a start signal of a sampling frequency synchronization acquisition and performs sampling the integer carrier frequency synchronized signal. a pre-processing unit receiving an analog signal and converting the received analog signal to a digital signal; a reception synchronization unit comprising a plurality of different synchronization units, each performing a different synchronization process sequentially by receiving the digital signal, the reception synchronization unit controlling a start of the synchronization process of a next synchronization unit according to a presence or non-presence of the synchronization acquisition of a current synchronization unit; and a post-processing unit decoding the synchronization-acquired signal, characterized in that the reception synchronization unit comprises an automatic gain control unit, a coarse symbol timing synchronization unit, a fine carrier frequency synchronization unit, an integer carrier frequency synchronization unit, a sampling frequency synchronization unit, a scattered pilot extracting unit and a fine symbol timing synchronization unit, the fine carrier frequency synchronization unit recognizes a lock signal of the coarse symbol timing synchronization unit inputted from a lock signal control unit as a start signal of a fine carrier frequency synchronization acquisition, eliminates a frequency offset and phase jitter of the pre-processing unit, and converts a band pass digital signal to a baseband digital signal, the integer carrier frequency synchronization unit recognizes a lock signal of the fine carrier frequency synchronization unit inputted from the lock signal control unit as a start signal of an integer carrier frequency synchronization acquisition and compensates the signal processed by the fine carrier frequency synchronization unit by estimating an integer multiplication of an interval of a subcarrier closest to an initial frequency offset, and the sampling frequency synchronization unit recognizes a lock signal of the integer carrier frequency synchronization unit inputted from the lock signal control unit as a start signal of a sampling frequency synchronization acquisition and performs sampling the integer carrier frequency synchronized signal.