The invention discloses a two-segment dual-side diversion sewage treatment method and sewage treatment equipment thereof. According to the method, sewage to be treated is fed into a dual-side diversion sewage treatment system to be subjected to two-segment aeration treatment; in the two-segment aeration treatment, an aeration area of a sewage treatment pond is partitioned into a first aeration area and a second aeration area in front and back segments through a partition wall; aerators are arranged at the bottoms of the two segments of aeration areas; the concentration of sludge placed in the first aeration area is greater than the concentration of sludge placed in the second aeration area. After the aeration area is partitioned into the front and back segments, the sludge concentration and the aeration amount can be increased by the first aeration area, and the sludge concentration and the aeration amount can be adjusted to a sludge precipitation effect being most suitable for a precipitation area by the second aeration area, so that the treatment efficiency is ensured, and a precipitation effect is achieved, and the investment is very small.