The concept of eigenvalue matching was put forward based on analyzing the continuous bits matching rule.The negative algorithm was improved by eigenvalue matching rule.The conception of major histocompatibility complex(MHC) was introduced

and the MHC detecting window was designed based on analyzing the characteristic of black holes and the relationship between non-detector set and black holes to terminating the threat of black holes.Simulation results show that the black holes which can′t be found using detectors were successfully detected by this new detecting window

which ensured the precision and security of the detecting system.Also

the consumption of the time and occupation of system resource were not increased significantly.