NOVELTY - The fully automatic biogas interior micro-oxygen desulfurization device comprises a anaerobic digestion tank, where the anaerobic digestion tank comprises a main tank body, a stirring spiral, a discharging device, a feeding device, a water bath interlayer, a stirring motor, a methane outlet, a hydrogen sulfide online monitoring meter, an oxygen peristaltic pump, a pH integrated module, a dissolved oxygen online monitoring instrument, a data acquisition integration module, a temperature online monitoring meter, a thermocouple, a water inlet pipeline, a water outlet pipeline and a water pump.    USE - Used as fully automatic biogas interior micro-oxygen desulfurization device.    ADVANTAGE - The automatic biogas in micro-oxygen desulfurization device has simple structure.    DETAILED DESCRIPTION - The fully automatic biogas interior micro-oxygen desulfurization device comprises a anaerobic digestion tank, where the anaerobic digestion tank comprises a main tank body, a stirring spiral, a discharging device, a feeding device, a water bath interlayer, a stirring motor, a methane outlet, a hydrogen sulfide online monitoring meter, an oxygen peristaltic pump, a pH integrated module, dissolved oxygen online monitoring instrument, a data acquisition integration module, a temperature online monitoring meter, a thermocouple, a water inlet pipeline, a water outlet pipeline, a water pump, a data processing system and a constant temperature water tank. The stirring spiral is arranged in an anaerobic digestion tank of the main tank body. The stirring electric motor is connected with an agitating auger. The discharging device is fixed at lower end of the main tank body. The feeding device is fixed on an upper end of the main tank body. An outer surface of the main tank body is provided with a water bath. The water inlet pipe is provided with a water pump. An end of the water inlet pipeline is inserted into water bath interlayer, and other end of the water inlet pipeline is inserted into the constant-temperature water tank. The biogas outlet is arranged at the upper end of the main tank body. The hydrogen sulfide online monitoring meter, the oxygen peristaltic pump, the pH on-line monitoring meter, the dissolved oxygen on-line monitoring instrument and the temperature online monitoring device are fixed on a side wall of the anaerobic digestion tank of main tank body. The data acquisition integration module is connected with the data processing system. An end of the thermoelectric couple is connected with the data acquisition integration module, and the other end is inserted into the constant-temperature water tank. The discharging device is provided with feeding and discharging switch.