What do you mean by field investigation?

On-the-spot investigation refers to the on-the-spot investigation, investigation and evidence collection by the police, forensic doctors, production safety supervision and other departments after an accident, crime or other events. It is an important link in criminal investigation, safety production supervision and other work, and it is of great significance to find out the causes and responsibilities of accidents and crimes and formulate effective preventive measures. The main contents of on-site investigation include on-site investigation, on-site evidence collection, on-site record and on-site measurement. Through on-site investigation, direct and objective evidence can be obtained, which provides a basis for subsequent investigation and judicial procedures. On-the-spot investigation usually includes detailed observation and record of the places, articles and personnel of the crime, and collection of relevant physical evidence and witness testimony. During the investigation, careful measurement, photography, video recording and other means will be used to preserve the original appearance and related information of the site.