Biogas slurry storage tank capable of automatically measuring water level

The utility model relates to the technical field of biogas slurry storage, in particular to a biogas slurry storage tank capable of automatically measuring water level, which comprises a tank body, an observation window mounted on one side of the tank body, a display screen mounted on the outer wall of the lower part of the tank body, a communicating pipe mounted on the inner wall of one side of the tank body, and a liquid inlet end arranged on one side of the bottom end of the communicating pipe. A floating ball is arranged in the communicating pipe, exhaust ends are arranged on the two sides of the top of the communicating pipe, and an infrared sensor is installed on the inner side of the top end of the communicating pipe. In the biogas slurry storage tank capable of automatically measuring the water level, the communicating pipe and the floating ball can ensure that the floating ball and the liquid level are level in real time through buoyancy when the liquid level changes, the height of the floating ball