Seat belt system

A seat safety belt system is used for improving the situation that a seat safety belt exposed out of a vehicle door opening of a front row seat hinders passengers from entering and exiting a rear row seat, and the seat safety belt system is a three-point type seat safety belt system. The seat safety belt system comprises a seat safety belt, and a ring sleeve is arranged at the bottom end of the seat safety belt. The seat safety belt system further comprises a seat safety belt fixing device, the seat safety belt fixing device comprises a rod piece, and the rod piece is used for being sleeved with the ring sleeve so as to provide a safety belt lower portion installation fixing point. The rod piece comprises a sliding section and a stop point section; the stop point section is arranged at the front end of the sliding section; when the seat safety belt is in an inserted connection state, the ring sleeve is fixed at the stop point section; when the seat safety belt is not inserted and withdrawn, the ring sleeve sl