According to relevant information, the inquiry shows: half a year. Because the frozen account can be unfrozen after six months of criminal investigation, the public security organ's procedures for handling criminal cases stipulate that the time limit for freezing deposits, remittances, securities trading settlement funds, futures deposits and other property is six months. The maximum period of each freeze shall not exceed six months. Therefore, Jiangsu Taizhou Criminal Investigation Special Line will freeze the bank card for six months before it will be automatically unfrozen.