Generally speaking, the detention period of public security organs for criminal suspects is 14 days, and the longest detention period for major criminal suspects who commit crimes on the run, commit crimes for many times and commit crimes in collusion is 37 days. However, after the expiration of criminal detention, criminal compulsory measures such as arrest can be changed. The actual detention time of criminal suspects is often much longer than that of criminal detention.
Legal basis:
Article 65 of the Criminal Procedure Law People's courts, people's procuratorates and public security organs may obtain a guarantor pending trial for a criminal suspect or defendant under any of the following circumstances:
(a) may be sentenced to public surveillance, criminal detention or independent application of supplementary punishment;
(two) may be sentenced to more than fixed-term imprisonment, bail will not cause social danger;
(3) A woman who is seriously ill, unable to take care of herself, pregnant or breast-feeding her baby is released on bail pending trial, which will not cause social danger;
(four) the detention period expires, the case has not yet been settled, and it is necessary to get a bail pending trial.
Bail pending trial shall be executed by the public security organ.