The invention discloses an access control system for automatic grading identification based on a license plate, a human face and fingerprints. The system comprises a processor, an image collection recording module, a license plate positioning module, a face positioning module, a fingerprint identification module, a motor control module, an anti-pinch module, a power supply monitoring module, a prompting and alarming module, a telephone and short message reminding module, and an elevator, family access and garage access communication and control module. The invention aims at providing an intelligent district access control system which is advanced in function, flexible to control and high in reliability. By adopting the system, an area to be monitored is divided into a vehicle access and a pedestrian access; high-reliability identity recognition is achieved by grading identification of the license plate, the human face and the fingerprints; entering of a criminal offender is avoided; the phenomenon of stealing a car is reduced; the safety of the district is enhanced; the life and property security of a proprietor is also ensured.