At its most general level, Evidence means those items of information which are gathered by the parties as part of fact-investigation process and then presented to the court as a step towards persuading the court that their argument is correct - in other words, information collected and advanced to prove a case. There are so many kinds of Evidence in this world. and most of evidence at present are digital evidence. Digital Evidence is information which is contained in the digital medium or is being sent by the digital medium. After all Digital Evidence is consisted of digital medium as formal factor as well information as substance factor. Digital Evidence has several character which can not be found in the Analogue evidence. It may be summarized as follows. We can not see the Digital Evidence with the naked eyes. Because the Digital Evidence is information which is contained in the digital medium or is being sent by the digital medium. Therefore If we want to look into the Digital Evidence, Digital Evidence must be changed into the shape of Analogue. The Digital Evidence is manufactured through a little impact, therefore the original is very important. And the Digital Evidence is not subordinative but independent from the digital medium. The Digital Evidence always contains the same contents regardless of the digital medium. The very small digital medium can contain huge information and can send huge information. thus there is some problem relating scope of seizure and search. And The Digital Evidence is sent over the border. Therefore there are problems about jurisdiction relating to collect evidence. There are many kind of digital evidence. It is as in the following. Evidence to be contained and being sent, A volatile evidence and non-volatile evidence, An image date evidence and voice date evidence.