The invention discloses an ad hoc network communication device fused with broad bands and narrow bands. The device comprises a broadband ad hoc network module, a narrowband ad hoc network module, a broadband antenna and a narrowband antenna, the broadband ad hoc network module comprises a broadband micro-control unit, a power supply management unit, a serial port multiplexing unit and a broadbandradio frequency unit. The narrowband ad hoc network module comprises a main control chip and a narrowband radio frequency unit. The broadband micro-control unit provides an internet access to interactwith the outside, the serial port multiplexing unit provides a serial port to interact with the outside, the serial port multiplexing unit sends information to the narrowband ad hoc network module through the serial port, and the main control chip in the narrowband ad hoc network module controls the power supply management unit through a universal input/output pin tube. According to the invention, broadband service networking can be realized, and the coverage range of narrow-band services such as instructions and the like can be greatly improved; the working state of the broadband ad-hoc network module is controlled through the narrowband ad-hoc network, the standby power consumption is greatly reduced, and meanwhile the size of equipment is reduced.