Intelligent terminal equipment and information transmission method and system using the same are disclosed. The method includes that intelligent terminal equipment reads the local contact information, generates a signature to be an original signature which has a corresponding terminal identifier based on the local contact information, and transmits the original signature and the terminal identifier to the server for saving the original signature and the terminal identifier in the server. The method further includes that intelligent terminal equipment captures the information transmission request, accesses the original signature generated by the local contact information, and transmits a processing information to the server to compare with the saved signature in the server for an identification process, in which the processing information includes the terminal identifier, the transmission information and the original signature. The present invention can improve the security of the information transmission for the intelligent terminal equipment.