The invention discloses a pulse aeration type wastewater garbage disposal device with a Roots blower. The pulse aeration type wastewater garbage disposal device comprises a big wastewater tank, an incinerator, a counter-current drying tower, a horizontal spiral centrifugal machine and a sine roller, wherein a large amount of stirring devices and beaded ultrasonic excitation stirrers are arranged in the big wastewater tank; the Roots blower, a bottom valve and a slurry pump are connected with a cone base through pipelines; a horizontal spiral centrifugal machine, a spiral air-closed feeding machine and a counter-current drying tower are successively connected with the slurry pump; a tail gas pipe is arranged on a right upper part of the drying tower; and a cosine plastic plate pulse aeration device is arranged on a left lower part of the drying tower. The sine roller, the cosine plastic plate pulse aeration device and the beaded ultrasonic excitation stirrers of the pulse aeration typewastewater garbage disposal device all have distinct characteristics and are capable of reliably synergic completing the treatment for municipal wastewater and garbage.