The forensic science (expert evidence) is refers to the lawsuit activity the expertutilizes the science and technology or the specialized knowledge the technicalityquestion which involves to the lawsuit carries on distinguishes and judges andprovides the expert opinion the activity. Along with society’s development and thetechnical progress, the hard problem which meets in the lawsuit activity are gettingmore and more, forensic science’s application is also getting more and morewidespread, its function is v...