Provided is a mobile chatting system for allowing cartoon story-type chatting between chatting users of a mobile terminal on which a cartoon-type chatting application is installed and a mobile terminal on which the cartoon-type chatting application is not installed, which includes: a first mobile terminal on which a cartoon-type chatting application is installed; a second mobile terminal for allowing chatting in a cartoon story form through a web page; a chatting server for relaying chatting between the first and second mobile terminals; and a chatting web server for, when a chatting message is input from the second mobile terminal, displaying the message and the user of the second mobile terminal with a cartoon character on the chatting web page.