A language learning system and a method thereof are disclosed. The language learning system comprises at least one teaching material database and a computer apparatus. The teaching material database comprises original video data, original broadcast sequence data and authored learning data. The computer apparatus comprises a language learning module, a text record table and a broadcast rule table. The language learning module has an index module, a broadcast module and a recording module. The index module compares the original broadcast sequence data with the text record table to generate a broadcast sequence table. At least one learning unit is generated from the original video data or the authored learning data based on the broadcast sequence table. The broadcast module broadcasts the learning unit based on the broadcast rule table. In addition, the computer apparatus can automatically download the broadcast rule table, the learning unit and the language learning module to a portable video broadcast apparatus.