Can the police find out the content of the message?

Legal analysis: it can be found. The public security bureau can find out the content of the message. The content of short messages involves criminal cases, especially important criminal case investigation clues. The public security organ at or above the county level may take technical investigation measures for the mobile phone number. This method can track the location of the suspect's mobile phone, even if it is turned off, it can track and monitor the suspect's phone and intercept the suspect's short message.

Legal basis: Article 54 of the Criminal Procedure Law of People's Republic of China (PRC). People's courts, people's procuratorates and public security organs have the right to collect and obtain evidence from relevant units and individuals. The relevant units and individuals shall truthfully provide evidence. Evidence materials such as physical evidence, documentary evidence, audio-visual materials and electronic data collected by administrative organs in the process of administrative law enforcement and case investigation can be used as evidence in criminal proceedings. Evidence involving state secrets, commercial secrets and personal privacy shall be kept confidential. Whoever forges, conceals or destroys evidence, and whoever the evidence belongs to, will be investigated by law.