The utility model provides a novel improve special anaerobic reactor stirring of biogas engineering of structure device, including the shell, the installation cover, stirring vane, the (mixing) shaft, the shaft coupling, the automatic operation panel, connecting wire, the motor, the motor wire box, the motor output shaft, fixed plate and fixing bolt, the shell setting in the lower part of shaft coupling, position between stirring vane and (mixing) shaft is installed to the installation cover, the automatic operation panel pass through the fixed plate and fixing bolt installs the upper left portion at the shell, the motor setting on the upper portion of shaft coupling, the motor wire box set up the upper portion at the motor, the motor output shaft set up the last lower part at the motor. Through automatic operation panel and stirring vane's setting, be favorable to accurate control motor, prevent to rust and corrode, improve intelligent degree, further be favorable to improving the stability and the work efficiency of stirring, and then reduce maintenance cost, increase of service life.