Lawyer Ye Bin Reply: Hello, a senior lawyer with 16 years of criminal case handling experience will answer the question for you. The maximum length of criminal detention is 37 days. During these 37 days, you should try your best to apply for a guarantor pending trial. You can't wait for 37 days of detention, which does not mean that you will be released automatically after 37 days. In criminal cases, it is more important for people to come out as early as possible. After you find lawyer Ye Bin, click on my picture and consult one-on-one for free.