Baseline correction is one of the most critical procedures for data processing of strong motion records. Most of the current methods depend on personal experience and cannot be automatically implemented, which results in large uncertainties of permanent displacement. In this regard, an adaptive baseline correction method for strong motion records is proposed. The strong motion records obtained at Wolong station (051WCW) were used as an example to describe each step of the proposed method. Subsequent permanent displacement was consistent with a value provided by another method, which verified the accuracy of the proposed method. Finally, the proposed method was applied to the Wenchuan earthquake, and permanent displacement field of 37 strong motion stations was achieved. Compared to the results given by Wang, et al. (2011), this result shows that maximum permanent displacement of 24 stations given by the proposed method is almost the same as those given by the other method. The comparison indicates that the proposed method is able to correct the baseline drift in strong motion records, but has some limitations that require further improvement.