 Etchū-Daimon Station opened on 15 October 1923 as a station on the Japanese Government Railway (JGR).It was privatized on 1 April 1984, becoming a station on JR West.From 14 March 2015, with the opening of the Hokuriku Shinkansen extension from to , local passenger operations over sections of the Hokuriku Main Line running roughly parallel to the new shinkansen line were reassigned to different third-sector railway operating companies.