Thinking on the Role of Spot Protection to Main Body

As the starting point and basis of investigation,spot protection should be put great emphasis by the police.The paper gives several ideas for studying together in the police.The paper gives several ideas for studying together in the police in order to stop up a loophole,perfect system,give full play to police's role as main part in spot protection,improve the formation of evidence chain as could as possible and crack down the crime effectively in time.