Dual-mode mobile phone for three-network fusion system based on internet and telephone network

The invention discloses a dual-mode mobile phone for a three-network fusion system based on an internet and a telephone network, comprising a central processing unit, a terminal signaling platform, a switch unit, a mobile phone module, a 2G/3G wireless IP (Internet Protocol) module, a WiFi (Wireless Fidelity) module and a telephone circuit module which are connected with the central processing unit and a receiver/headset connected with the telephone circuit module, wherein the switch unit comprises three switch ports; and any two of the three switch ports are controlled by the central processing unit to be connected. The invention not only can achieve the communication function of general mobile phones, but also can realize the establishment of two-away calling connection with all terminals in the three-network fusion system to carry out various communications without content form limitation as well as the establishment of the two-away calling connection with telephone terminal outside the three-network fusion system. i.e., the dual-mode communication function of the communication of the general mobile phones and the communication of the three-network fusion system can be achieved; and in addition, the dual-mode mobile phone is convenient for carrying.