According to the precise positioning requirement of INS/BDS integrated navigation system in short-term occlusion scenes of high dynamic satellite signal，the BDS/INS tightly coupled filter method based on sequential algorithm is studied in this paper. The BDS/INS tightly integrated filter equation is introduced first. Besides，the method based on sequential algorithm is derived in detail，and the corresponding theoretical analysis is carried out. In the end，the filtering performance of proposed method is simulated and analyzed by signal simulator. The results of corresponding simulation indicate that the algorithm proposed can reduce the computational complexity of the system effectively without losing the filtering precision. Moreover，the applicability of the INS/BDS integrated navigation system is enhanced in short-term occlusion scenes of high dynamic satellite signal.short-term occlusion