Within six months.

According to the relevant regulations, if the violation of public security management behavior is not found by the public security organs within six months, no longer punishable. Therefore, the public security organs to check the transfer records of prostitution, the bill will be continued to the time of the first time to this place, from the consumer bill to check, so the reverse check within six months of the transfer records.

Two years, but filed a case there is no time limit.

1, transfer records can be used as evidence of pornography, but only as circumstantial evidence.

2, the reason why it can not be used as direct evidence, because the transfer of money can only prove the motive of the behavior of the parties involved in prostitution, but not the direct occurrence of prostitution.?

Legal analysis: In general, the police will not catch prostitutes through WeChat transfer records. The transfer records alone cannot establish the fact of whoring, unless the transfer voucher states the purpose of the transfer. The transfer record can only support your behavior specific or rely on other evidence, such as the two sides of the confession can match and so on. Specific penalties will depend on the actual circumstances of the case. General prostitution, prostitution, the penalty of ten days or more than fifteen days of detention, at the same time can also be imposed a fine of less than five thousand yuan.

Legal basis: "Chinese people's **** and the State Administration of Public Security Punishment Law" Article 66 Prostitution, prostitution, shall be sentenced to ten days to fifteen days of detention, and may be fined less than five thousand yuan; less serious, shall be sentenced to less than five days of detention or a fine of less than five hundred yuan. Soliciting in a public place of prostitution, shall be sentenced to less than five days of detention or a fine of less than 500 yuan.