During criminal detention, lawyers may apply to meet with criminal suspects. If the case does not involve state secrets, the public security organ will arrange a lawyer to meet the suspect within 48 hours. Under normal circumstances, investigators will be present. At the stage of examination, prosecution and trial, lawyers can meet without approval, as long as they follow the schedule of the detention center. The rules for lawyers to meet criminal suspects are different from those for non-lawyers. A lawyer may ask the investigation organ to meet the criminal suspect. Lawyers association is based on different departmental laws and regulations, and its meaning is different. The criminal procedure law stipulates that the purpose of lawyer meeting is to protect the litigation rights of criminal suspects and defendants, which embodies a legal system. The Lawyers Law stipulates that lawyers' meeting is a right, emphasizing lawyers' right to meet criminal suspects and defendants according to law.