The invention discloses a jet array-type aeration device which comprises a water pump, a water inlet pipe, a gas inlet connecting pipe, and a water outlet pipe which are mounted in order; the gas inlet connecting pipe is a multiway pipe; an aeration structure is mounted inside the gas inlet connecting pipe; the aeration structure comprises a gas jet ring; a annular gas inlet space directly or indirectly communicated with the water outlet pipe is formed between the outer wall of the gas jet ring and the inner wall of the gas inlet connecting pipe; a plurality of array through holes are arranged on the inner wall at one end of the gas jet ring near the water outlet pipe; the array through holes are uniformly distributed along the inner wall circumference of the gas jet ring. According to the invention, by the arrangement of array through holes on the gas jet ring, a circular water column is cut by the array through holes into a gear-like water column when water flow passes through the gas jet ring; an array-type vacuum negative pressure zone is formed between teeth of the gear-like water column; thus a lot of bubbles are formed when the water column passes through the gas inlet connecting pipe and absorbs a lot of air; therefore, the aeration effect is realized, and the characteristics of energy saving, environmental protection, and portability are reached. The aeration device of the invention has better aeration effect when used under a condition with large water flow.