The invention discloses a wireless transmission current measuring device. The device has the measuring function, the energy self-service supply function, the capacitive energy storage function, the wireless communication function and the wireless charging function. The device adopts a distribution design, can integrate a failure indication module, and reserves interfaces for other sensors, so as to have strong expandability. All parts of the device are poured in one plastic module, and no electrified body is externally exposed, so that the device is intrinsically safe. A measuring coil and an energy supply coil of the device can be opened and closed, the installation is very convenient, and the device is very suitable for new projects and later stage reconstructed projects as well.