The invention relates to a satellite navigation receiver coherent integration method compatible with a GPS/BD dual system, and belongs to the technical field of the baseband processing technique for a multi-system satellite navigation receiver. According to the method, firstly, an improved histogram concept is adopted and the bit synchronization of the flip edge of a GPS/BD navigation message is found out. On the basis of the bit synchronization, the influence of the bit flipping is eliminated, so that the coherent integration is realized for a longer period of time. The above method is compatible with the GPS/BD dual system. In this way, the influence caused by the signal modulation Neuman-Hoffman (NH) code of a Beidou satellite can be completely avoided, the signal-to-noise ratio is effectively increased. The capability of the GPS/BD satellite navigation receiver in tracking weak signals is improved.