Method and system for verifying legality of long text message in game

The invention provides a method for verifying legality of a long text message in a game, which comprises the following steps of: S1, setting a sensitive shielding message text library in a game server, S2, sending a long text message from a game client, and sending data to the game server by the game client; S3, enabling the game server to send the data to the message monitoring layer of the gameserver, and enabling the message monitoring layer to convert the data into a unique SimHash value through a SimHash algorithm; S4, equally dividing the SimHash value into four parts of message featurevalues SubCode, and then matching the four parts of message feature values SubCode with four parts of illegal message feature values SubCode corresponding to each long message to be shielded in the sensitive shielding message text library, wherein if the result is inquired, it shows that the long text message is similar to the long message to be shielded, otherwise, it is determined that there isno similar data; S5, retur