The invention discloses a short message grouping method and a device thereof. The short message grouping method comprises the following steps: obtaining the service provider number of the short message from the sender number of the short message; obtaining the service provider number of the short message from the sender number of the short message; obtaining the service provider number of the short message from the short message. The short messages are grouped at least according to the service provider number of the short messages. The short message grouping method provided by the embodiment groups short messages according to SP numbers, so that short messages from the same SP number but different short message sender numbers can be grouped into the same group, thereby improving the accuracy of grouping.