[1] The line continues past Songrim Ch'ŏngnyŏn Station to the freight-only Songrim Hwamul Station and the Hwanghae Iron & Steel Complex.

Originally built by the Chosen Government Railway (Sentetsu) as the Kyŏmip'o Line (겸이포선, 兼二浦線),[1] construction was completed in November 1905, and revenue operations began on 1 April 1908.

[2] Originally built to serve the Mitsubishi Iron Foundry (called the Hwanghae Iron & Steel Complex since 1945), in 1920 there was one daily round-trip through train between P'yŏngyang and Kyŏmip'o, along with five daily round-trip local trains (second and third class only) between Hwangju and Kyŏmip'o.

[3] After the defeat of Japan in the Pacific War and the subsequent partition of Korea, the entirety of the line, being north of the 38th parallel, was located in the Soviet zone of occupation; on 10 August 1946, the Provisional People's Committee for North Korea nationalised all railways within its jurisdiction, including the Songrim Line, and it has since been operated by the Korean State Railway.

[1] A yellow background in the "Distance" box indicates that section of the line is not electrified.