Top stirring anaerobic jar with gas holder

The utility model relates to the field of anaerobic jars, in particular to a top stirring anaerobic jar with a gas holder, which comprises an anaerobic jar tank body, a built-in biogas holder is arranged in the anaerobic jar tank body, and a biogas holder film and an anaerobic jar sealing base are arranged at the joint of the lower end of the built-in biogas holder and the anaerobic jar tank body; an upper transmission center stirring transmission assembly is arranged at the top of the anaerobic jar tank body, the lower end of the upper transmission center stirring transmission assembly is connected with an anaerobic jar upper transmission center stirring shaft, and the anaerobic jar upper transmission center stirring shaft penetrates through the interior of the built-in biogas cabinet and extends to the lower end of the interior of the anaerobic jar tank body; and a built-in biogas membrane and transmission shaft water sealing device is arranged at the joint of the transmission center stirring shaft on the a