The public security WeChat chat record can be queried no matter how long it takes. According to the judicial interpretation issued by the Supreme People's Court, China, electronic data such as e-mail, electronic data exchange, online chat records, blogs, Weibo, mobile phone messages, electronic signatures, domain names, etc. Should focus on the examination of authenticity, deletion, modification and addition. Individuals have not violated any laws, and anyone who views WeChat records will be suspected of infringing on the privacy of others. Public security organs can only investigate suspects after filing a case according to law. Otherwise, it is illegal law enforcement.

The police check WeChat. If a case is involved, they must file a case to check the chat record of WeChat. The public security department has the right to investigate.

Legal basis:

The Supreme People's Court's Interpretation on the Application of the Criminal Procedure Law of People's Republic of China (PRC).

Article 93:

For e-mail, electronic data exchange, online chat records, blogs, Weibo, SMS, electronic signatures, domain names and other electronic data. , should focus on the following contents:

(1) Whether to transfer with the original storage medium: if the original storage medium cannot be sealed, is inconvenient to move or should be kept, processed and returned by the relevant departments according to law, whether the electronic data is extracted and copied by more than two people, whether it is enough to ensure the integrity of the electronic data, and whether there is a written explanation and signature on the extraction and copying process and the storage location of the original storage medium;

(2) Whether the procedures and methods of collection comply with laws and relevant technical specifications: whether the electronic data collected through investigation activities such as inquest, inspection and search are accompanied by transcripts and lists, and signed by investigators, electronic data holders and witnesses; If not signed by the holder, whether to indicate the reason; If electronic data from overseas or other places are retrieved remotely, whether relevant information is indicated; And whether the specifications, categories and file formats of electronic data are clearly marked.

(3) Whether the content of electronic data is true, whether there is deletion, modification and addition, etc. ;

(four) whether the electronic data is related to the facts of the case:

(five) whether the electronic data related to the facts of the case are fully collected.

If there is any doubt about electronic data, it shall be identified or checked.