Abstract With scientific technology advanced, the investigation personnel have inclined to use scientific means such as, polygraph examination, DNA fingerprinting, in suspect's identification procedures, not only to prove their cases in criminal courts, but also to screen out or identify possible suspects. After examining the present condition of suspect's identifications in pretrial procedures and the admissibility of scientific evidence in the court practice, this report would like to provide the following helpful and valuable viewpoints. As to DNA fingerprinting, this research suggests that we must make an unified rule to regulate the proceeds of collecting body samples from a suspect, identification procedure and safekeeping of examination data. Especially, it is not admissible to coerce a suspect to accept the collection of body samples. Although DNA fingerprinting has been generally accepted as scientific evidence in courts, it should be cautious for courts to evaluate the reliablility of idenitification reports.