The utility model discloses an acid distribution branch pipe with an anti-swirl function for an acid distributor. Flow dividing holes are symmetrically formed in the two sides of the bottom of the transversely-arranged connecting pipe along the semi-circular angle range. Cross-shaped anti-swirl plates are further arranged at the flush positions of pipe openings in the two sides of the transversely-arranged connecting pipe; an arch-shaped cover plate is arranged at the upper half part of the flush part of pipe orifices on the two sides of the transverse connecting pipe; through the effects of the three structures of the flow dividing holes, the cross-shaped anti-swirl plate and the arch-shaped cover plate, the effects of no swirl during acid discharge and stable liquid level are achieved, and the acid distributor has the characteristics of strengthening the stability of an acid distribution system, reducing the energy consumption of the acid distribution system, and being simple in structure, convenient to manufacture, good in corrosion resistance and long in service life.