The invention discloses architecture and a realization method for a sensor information network. The architecture is characterized by comprising at least one hand-held communication device of any communication standard, at least one portable node device, a wireless sensor network of any form, a wide area communication network and a sensor network gateway, wherein the portable node device supports the wireless sensor network and has preset number binding relation with the hand-held communication device, and the sensor network gateway is used for bridging the wireless sensor network and the wide area communication network. The realization method comprises the following steps of: firstly, combining the hand-held communication device and the portable node device as an information terminal; then, accessing the wireless sensor network by a self-organizing network mode; subsequently, sensing the binding relation of the node device ID and the information terminal number by the wireless sensor network; and finally, realizing the wireless interactive data communication between the wireless sensor network and the information terminal. The application of the technical scheme of the invention effectively merges the transmission technologies of sensor network, wireless communication network and the like, and provides a solution for low-cost wireless sensor network application.