The present invention discloses a method for analyzing data, which comprises: judging whether the read of each multiplexing block in a media unit has been completed according to the total length of the media unit and the length of the multiplexing block when reading the multiplexing blocks in the media unit; the media unit is a video unit, an audio unit or a data unit. The present invention imposes the structural features of multiplexing blocks, when the receiving quality of the mobile media broadcasting terminal is well, which dispenses with judging whether the multiplexing block is the beginning multiplexing block or the ending multiplexing block according to the beginning ID code and the ending ID code, analyzing with type and data unit type field, and CRC. Therefore, the multiplexing block analyzer steps and the procedure of data process of the receiver are predigested. It performs quick analyzing.