Efficient biological bacteria biological filter

The utility model discloses an efficient biological bacteria biological filter which comprises a filter body and a water outlet, a water outlet is connected to the side surface of the tank body, a water distribution mechanism is mounted at the top of the tank body, an aeration mechanism is mounted in the tank body, and a filtering mechanism is embedded in the tank body. According to the efficient biological bacterium biological filter, when a nut thread slides to the side face of a first connecting ring, extrusion fixing can be conducted, a water distribution pipe can be connected with a main water pipe after being fixed, a stable fixing structure can be conveniently formed between the water distribution pipe and the main water pipe, and when a supporting ring moves to the bottom of a branch air outlet pipe, supporting can be conducted; the convenient aeration mechanism can be supported by the support ring during use, and when the storage box moves to a designated position, the partition plate can be opened t