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The Hengchun Line, a planned branch of Taiwan's South-link railway, aims to connect Kaohsiung, Taiwan's southern capital, with Kenting, a popular tourist destination. The line also includes an express train service from Xinzuoying Station, a major transportation hub, to Hengchun. Construction is set to begin in 2017, with completion expected by 2024–2025.

The idea of constructing the Hengchun Line dates back to 1876 when it was proposed by Governor Ding Ri-chang. During Japanese rule in 1924, plans were made for the line to branch off from the Pingtung line, but budget constraints led to its shelving in 1927. The necessity of the line became evident after Kenting National Park opened in 1984 and due to issues with Hengchun Airport's vulnerability to strong winds. Additionally, the destruction of several bridges on Provincial Highway 1 during Typhoon Haitang in 2005 highlighted the need for a reliable railway connection.

A feasibility study was completed in 2002, but initial recommendations favored coach transportation from Fangliao Station to Kenting National Park. Following further lobbying by Hengchun residents, a revised feasibility study in 2014 proposed express services using TRA rolling stock from Xinzuoying Station to Hengchun. This revised plan was approved by the Executive Yuan in December 2015. A potential branch line to the National Museum of Marine Biology and Aquarium is currently under consideration.