This study dealt with criminal evidence on cybercrime using research and analysis. It starts by clarifying the nature of the criminal evidence in one hand and cybercrime on the other hand. Then, the study investigates the electronic evidence and its collection procedure, whether the traditional procedures, or the newly developed procedures in collecting the electronic evidence. Then, the study pointed out the difficulties encountered by the investigation authority on the electronic evidence as well as the criminal evidence on cybercrime. At the end, the study showed the judge's belief on electronic evidence through elucidating his authority to accept and evaluate the evidence, referring to the principles and controls that govern his freedom and his belief in accepting and evaluating the electronic evidence. The study reached a number of results, most notably the following: 1. The electronic crime is distinguished from various crimes as a result of its special nature; whether by the means of committing this type of crime, location, and the criminals who commit such crimes. 2. It is very important to qualify those who are working on inquiry procedures and investigation, teaching them computer science, information technology and how to deal with the different types of electronic devices. 3. Doing a rapid reservation of data is considered a modern procedure that did not exist before. It is a modern procedure though; it hasn't been applied in numerous legislations till now. 4. The investigation authorities are encountering various difficulties in the field of cybercrime criminal proof in terms of the nature of electronic evidence and in proofing electronic crime procedures. 5. The judicial belief principle, which grants the judge the freedom to form his belief in any evidence of the lawsuit proofs presented in front of him. It means the possibility of evaluating the electronic evidence according to this principle.