Provided are a display panel and a manufacturing method thereof. The display panel includes: a first substrate and a second substrate disposed opposite to each other; a bank layer located on a side of the first substrate facing the second substrate; and a light-emitting device. The bank layer includes a plurality of bank structures; and the plurality of bank structures enclose a plurality of bank openings. The light-emitting device is arranged corresponding to each bank opening of the plurality of bank openings. The plurality of bank structures includes at least one first bank structure, and each of the at least one first bank structure has a first channel communicating at least two adjacent ones of the plurality of bank openings.