Objective:To explore the detection results of DNA in human obsolete bone extracted by modified phenol-chloroform method and amplified with different kits. Methods:DNA in 30 femoral bones were extracted by modified phenol-chloroform method,fluorescent label and multiplex amplification with identifiler-plus kit,minifiler kit and godeneyeTM 20A kit,while the gene loci was detected and analyzed by genetic analyzer software. Results:The DNA gene loci in in human oboslete bone were 469,262,588 re-spectively,which were higher than those of 307,175,436 by traditional method. Conclusion:DNA in human obsolete bone might be extracted and detected effectively by modified phenol chloroform method and multiplex amplification with 3 kits.