Provided are a busbar connection apparatus, a busbar bushing, and a manufacturing method therefor. The busbar connection apparatus (100, 300) comprises: a first busbar bushing (101, 301) suitable for surrounding at least one part of a first busbar (103, 303) in a sealing manner; a second busbar bushing (102, 302) suitable for surrounding at least one part of a second busbar (104, 304) in a sealing manner; a connection conductor (105, 305) located between the first busbar bushing and the second busbar bushing, and electrically connecting the first busbar and the second busbar; and a connection conductor bushing (106, 306) suitable for surrounding the connection conductor in a sealing manner. At least the first busbar bushing comprises: a first portion suitable for surrounding at least one part of the first busbar in a sealing manner; and a second portion connected to the first portion and forming, together with the first portion, a gap extending in an axial direction of the first busbar, with the gap being suitable for accommodating the connection conductor bushing. The busbar connection apparatus provides a splicing method for switch cabinets, and has the advantages of saving space, a simple structure, convenient installation, and providing a uniform electric field at each connection part.
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