The invention relates to a self-powered intelligent sensor for a fluid pipeline, which is technically characterized by comprising a computer mainboard, a network connector, a sensor, a power supply unit, an electric generator, a storage battery and a turbine, wherein the computer mainboard is respectively connected with the sensor and the network connector; the electric generator is connected with the turbine arranged in the fluid pipeline and is driven to generate power by the turbine; after carrying out voltage stabilization treatment on the electric energy provided by the electric generator, the power supply unit provides power for the computer mainboard, the network connector and the sensor; the storage battery is connected with the power supply unit so as to provide power for the computer mainboard, the network connector and the sensor; or the computer mainboard, the network connector and the sensor are charged by the electric energy provided by the electric generator under the control of the power supply unit. The self-powered intelligent sensor is reasonable in design, solves the problem that the sensor of the fluid pipeline also can be used under the condition without electric power, and has the characteristics of being powerful in functions, wide in usage, convenient to use, free from maintenance and the like, thus playing an important role in the development of Internet of things.