The invention belongs to the technical field of integrated navigation, and particularly relates to a GPS/INS integrated navigation system clock error correction method based on satellite PPS. According to the method, an INS clock is corrected by means of a GPS atomic clock, the technical problem that a GPS/INS integrated navigation system in the prior art has clock errors, and short-term stability of INS time and long-term stability of GPS time are combined, so that the integrated system obtains higher navigation positioning precision.