法医学在实践中的应用（The application of forensic medicine in practice）The application of forensic knowledge in practiceAbstract: This paper first describes the specific application of forensic medicine in society, such as the identification of criminal cases, the identification of wine frames and the identification of deaf mutes and so on. Then it expounds the importance of clinical identification and experimental teaching in forensic medicine. It is closely related to the vital interests of forensic medicine. Finally, the application of modern forensic science to various science and technology shows that the progress and development of forensic science can not be separated from other science and technology, but also inseparable from the experiment.Key words: forensic science; practice application; science and technology; poison double-edged swordForensic medicine is the science and technology of applied medicine and other related natural sciences. It studies and solves the science of medical problems in the process of law enforcement. It shoulders the task of providing scientific basis for criminal proceedings, providing a scientific basis for civil action and promoting the quality of work in medical institutions, which requires rigorous attitude and meticulous spirit.Forensic applications in the society: (1) in criminal cases in action: This is the task of forensic forensic task is to find the specific evidence, should try to move the technology, experience, to find evidence, careful observation is to find evidence of the essentials. After the evidence is found, a timely record of the evidence is also required. Found evidence by fixed (i.e. original record), the evidence itself characteristic, the surrounding relationship, found at a time and place to be fixed and recorded by text or video, photography, drawing and recording method. After the identification and identification of evidence, the time of the crime is provided, and the time of the crime plays a key role in the investigation of the case and the determination of the perpetrator. We also need to provide information about the process of the crime, the expert in analysis and identification of various kinds of evidence of the orientation and successively, to find out their logical relationship, for the judicial organs to provide information before and after the case. In general, to provide information for forensic crime prevention and comprehensive management of social order, some by means of science and technology caused personal injury identification, identification of some anti crime measures, can improve the overall security of technical measures and provide scientific advice for crime prevention. Forensic science can also be applied to the identification of medical malpractice, medical malpractice law issued by the book, according to the medical malpractice dispute for treatment, can protect the rights of victims, but also for medical disputes to provide the facts, the medical disputes can be solved reasonably. (2) identify the perpetrators of traffic accidents: use the gas chromatography to detect the blood alcohol content in the human body in the case of drunken traffic accidents. Wangnan Medical College forensic professional Zhang Wu et al. Through this method to detect 1000 cases suspected of drunk driving accident of the parties, the parties and the ratio of age and sex, the time to reach a conclusion: the people with suspected drunken young men; the time for dinner, after 1 to 2 hours, and with the body the blood alcohol content increases, increases the risk of traffic accident. Due to alcohol related traffic accidents increased year by year, in such cases, in addition to a comprehensive site survey and investigation, detection of blood and body fluid and alcohol content of the perpetrators or death becomes the evidence necessary to check, is an important index for forensic judgement on the truth of the accident, days after the trial is also important evidence. The determination of ethanol in blood by gas chromatography is characterized by high sensitivity and good reproducibility. But the detection of the blood alcohol concentration the deaths of some controversy: because can not determine the death caused by alcohol or dead bodies caused by bacterial fermentation, ethanol production organization can not be ignored in the process of corruption after death. So the forensic identification results is not only to consider the issue can be drawn, must consider various possibilities, then according to the field survey and other evidence to ruled out one by one, the last remaining look again how unbelievable is the truth.Forensic medicine can solve many of the controversies in real life. (3) identification of the deaf, deaf and blind crimes have occurred, taking into account the identification of this kind of disabled people, control ability is worse than normal, Chinas criminal law provisions of article sixteenth of the deaf and