Blocking-proof emitter

The utility model provides a blocking-proof emitter, which is characterized by comprising a water inlet filtering window, a labyrinth channel, two water outlet cavities and a sifting plate, which are arranged on an emitter body. The two water outlet cavities are symmetrically disposed at two ends of the emitter body and communicated with each other through the labyrinth channel, 'U'-shaped return labyrinth channels are further arranged on the emitter body, one end of each 'U'-shaped return labyrinth channel is arranged at the connection position of the labyrinth channel with the corresponding water outlet cavity, the other end of each 'U'-shaped return labyrinth channel is communicated with the corresponding water outlet cavity, the water inlet filtering window is communicated with the labyrinth channel, and the sifting plate is disposed at the back of the emitter body. The blocking-proof emitter is provided with the symmetrical two water outlet cavities and the symmetrical double channels, so that water supply failure due to blockage of the labyrinth channel of a single emitter is effectively avoided.