1. A universal internet information data mining method, comprising following steps: outputting a data mining human-machine interaction template; acquiring a topic keyword, a pragmatic keyword and a common keyword among the pragmatic keyword in data mining from a mining demand keyword input template of the data mining human-machine interaction template; acquiring a relevant demand selected by a user and a directly inputted special demand from a relevant mining demand selection column of the data mining human-machine interaction template; acquiring a “data mining” operation command and performing the data mining operation on internet information on the basis of acquired data mining demand keyword and acquired mining demand selected by the user; and outputting a data mining result to relevant demander.