A two-step frequency fast acquisition and accurate tracking recovery scheme is proposed aiming at carrier frequency recovery in Orthogonal Frequency Division Multiplexing(OFDM) system. Firstly, the influence of frequency offset on receiver performance is analyzed based on semi-analytical method, and then the estimation algorithm of frequency offset based on maximum likelihood estimator is proposed. Finally, for coarse frequency acquisition, the scheme uses the known symbols of a single synchronization sequence as the data-aided acquisition. Once the acquisition is over, the circuit switches to a decision-directed mode to perform fine frequency tracking, so as to achieve reliable data demodulation. The performance of the acquisition algorithm is evaluated in terms of the expansion of the lock-in frequency range and the correct locking performance, while the tracking performance is evaluated in terms of bias and variance of the steady-state frequency error. Finally, the basic principles of frequency control loop design and the selective criteria of loop parameters in acquisition and tracking mode are provided, and the performance of the proposed frequency recovery system is verified by simulation.