In the modification procedure of directions for analysis and treatment, forensic medicine specialists have made some good suggested statements on medical Gel Doc Systems analysis and treatment. Particularly regarding the pathological changes of COVID-19, obtained over and over repeatedly required fast autopsy at various levels. Aided by the support, understanding and cooperation of all events, pathological study of significantly more than ten situations regarding the keeps had been carried out, whichat different levels. With all the support, comprehension and cooperation of all functions, pathological examination of more than ten cases of the stays had been performed, which made an essential contribution to the comprehension of the clinical qualities and pathological qualities of this infection in addition to improvement of therapy programs. Sadomasochism is the intimate interest, psychosexual deviance or intimate crimes being intimately stimulated by putting up with or causing other people to endure. This study summarizes the style, assessment and diagnosis, categories and signs, emotional and biological systems, judicial personality and medical intervention methods of sadomasochism from the views of clinical medication, law, criminology and psychology, suggests that further research should just take local people with sadomasochism preference and local patients as research objects, pay interest to different forms of sadomasochists, conduct bottom-up analysis, explore the core elements and manifestations of sadomasochism, and accurately define and classify sadomasochism, construct a highly effective scale, a erectile dimension sexual stimulation system and a diagnostic criteria; discuss analysis methods along with criminal activity scene data; discuss the credibility of masochists’ permission along with diagnosis; establish specific criminal correction progra crime scene data; discuss the substance of masochists’ consent along with diagnosis; establish specific criminal correction programs and a treatment and rehabilitation system to deliver research for the improvement of medical, judicial and mental health services. Virtual autopsy is a brand new way of examining the morphological changes of cadaveric cells and body organs by medical imaging technology. It’s been widely used when you look at the recognition of reasons for demise. Multislice spiral computed tomography （MSCT） is actually a routine evaluation technique in certain identification organizations, though it cannot completely change old-fashioned autopsy, it plays a vital auxiliary or substitute part into the identification of certain abnormal factors that cause check details death. Basic MSCT scan cannot visualize cadaveric vessels, but could do cadaveric angiography to find out vascular injury or illness. This technology has entered a rapid development period in the past few years, and it has made a large development in contrast representative, perfusion techniques and imaging techniques. This article summarizes a few common cadaveric MSCT angiography techniques, such systemic angiography, angiography through cardiopulmonary resuscitation, targeted angiography, and angiography by cardiac puncture, and analyzes and cdiac puncture, and analyzes and compares the application form customers. Postmortem period （PMI） estimation has long been a significant and hard issue in the area of forensic pathology. In modern times, study development from the estimation of PMI utilizing RNA certain variation patterns after death was made by scientists in the home and aboard. This report summarizes the specific application ways of messenger RNA and non-coding RNA for PMI estimation based on the literatures and covers the present dilemmas and development styles, to be able to offer technical research for associated researches and estimation practice.Postmortem interval （PMI） estimation has been an important and tough concern in neuro-scientific forensic pathology. In the last few years, research development regarding the estimation of PMI utilizing RNA specific variation patterns after death is produced by scientists in the home and aboard. This report summarizes the specific application methods of messenger RNA and non-coding RNA for PMI estimation based on the literatures and covers the present dilemmas and development trends, so that you can supply technical research for associated studies and estimation training. Postmortem period （PMI） estimation is one of the most crucial and hard scholastic tasks in forensic sciences. Due to the impact enzyme immunoassay of the corpse itself in addition to water environment, corpses in liquid have actually unique corruption sensation and laws and regulations. Based on the knowledge of traditional PMI scientific studies of corpses on land, forensic professionals across the world have actually proposed a number of useful options for estimating postmortem submersion interval （PMSI）. This paper summarizes the literatures pertaining to PMSI in the past few years, and presents solutions to infer PMSI according to the phenomenon of corpses, the introduction of insects, the succession structure of aquatic organisms, together with modifications of other physical and chemical indexes of corpses, in order to offer some reference for the study of PMSI of corpses in water.