The invention discloses a digital matching filter for WCDMA (wideband code division multiple access) communication. An A/D (analog to digital) conversion module is used for carrying out sampling quantization on each collected sampling value, a serial/parallel conversion module is used for dividing samplings in former and later n times for a same code sheet to obtain data with an odd power and an even power sequences of a path I and a path Q, a matching filter module is used for carrying out data matching on the data with odd power and the even power sequences of the path I and the path Q through a Golay sequence correlator, the serial/parallel conversion module is used for recovering the data with the odd power and the even power sequences of the path I and the path Q output by the matching filter module into an original data sequences of the path I and the path Q, a quadratic sum calculation module is used for carrying out quadratic sum calculation on the original data sequences of the path I and the path Q, and a relative detection module is used for carrying out peak value detection on a result of the quadratic sum calculation of the original data sequences of the path I and the path Q output by the quadratic sum calculation module to realize synchronization of a main synchronization sequence; and hardware resource is reduced, a data processing speed is improved, a synchronous sequence in time slot synchronization of WCDMA communication system community searching is rapidly captured.