The method comprises the steps of providing multiple smart sensing devices, wherein each smart sensing device searches other smart sensing devices with same sensing functions in a corresponding effective communication network according to a respective sensing function and a network type supported by each smart sensing device, and establishes a function group with the other smart sensing devices searched in a same network domain; one smart sensing device in each function group is set to be a master sensing device according to a preset rule, and the other smart sensing devices are set to be slave sensing devices; and the master sensing device receives working parameters and a control instruction transmitted by an external device of the function group in which the master sensing device is located, and transmits the working parameters and the control instruction to the slave sensing devices in the function group. According to the method provided by the system and the method, the working parameters and the control instructions can be transmitted to the master sensing devices in the function groups through a server; the demand for reducing power consumption and saving energy can be effectively satisfied; the operation benefit can be optimized, and the information collection accuracy can be ensured.