With the rapid development of mobile internet, language translation technology has also been widely applied and developed. Language translation and communication have been realized through speech recognition, speech synthesis, Machine translation and other technologies. This article conducted in-depth research and analysis on language translation technology based on mobile internet. First, the development background and status quo of mobile Internet language translation technology based on Big data analysis technology were introduced, including the current mainstream translation applications and platforms. Secondly, key technologies such as speech recognition, speech synthesis and machine translation were introduced and analyzed in detail, including technical principles, application scenarios, advantages and disadvantages, etc. Finally, through experimental analysis, a comparison of the translation speed and matching rate of several translation systems was conducted, verifying the feasibility of this method. The experiment showed that the translation speed of this method was about 8 sentences per second, with a matching rate approaching 100%, far surpassing the other two translation systems.