Ecological sound barrier

The utility model provides an ecological sound barrier which comprises a plurality of sound insulation modules, the sound insulation modules are spliced into a whole, each sound insulation module comprises a sound insulation plate, a plurality of bearing strips extending in the horizontal direction are formed on one side face of the sound insulation plate, grooves are formed in the top face and the bottom face of each bearing strip, and the sound insulation plates are arranged in the grooves. The multiple bearing strips are sequentially arranged in the vertical direction. In every two adjacent bearing strips, a plant growth bag is placed in a groove in the top face of the bearing strip located on the lower portion, the plant growth bag is filled with a plant growth matrix, and plants are planted in the plant growth bag; a watering device is arranged in the groove in the bottom face of the upper bearing strip, water dripping holes are formed in the watering device, and the watering device is communicated with