Two galleries are located on both sides of the station above the tracks and they are connected by passenger bridges spanning the station hall. This enables passengers to move about the station on two levels. The walls of the platform hall are lined with light-coloured ceramic tiles. The columns are faced with yellow-brown Chorgun marble. The bronze capitals display the emblem of the Komsomol league which emphasized the role of Komsomol youth league members in the construction of the first Metro line. The walls of the balcony galleries are faced with Gazgan marble and their columns are lined with Prokhoro-Balandinsky marble. The floor is made of grey and red granite. It was the first time a majolica panel was used to decorate a metro station and this panel depicted heroic labour of the Komsomol members who helped to build the metro (Metro builders, E.Lanceray).
   The northern ticket hall (architects: A.Rukhlyadev, V.Krinskiy, designers: V.Favorsky and A.Ivanov) was demolished and replaced by another one in 1952 which began serving both this station and Komsomol’skaya-Koltsevaya. The first train left Komsomol’skaya station on March 15, 1941.
   The architects of the station were awarded a Stalin prize, grade 1 on March 15, 1941.

   Exit. The station's south vestibule is located inside the Kazan Railway Terminal. It has exits to Komsomolskaya and Kalanchevskaya ploshchad, Moskovskiy trade centre, Railwaymen’s cultural centre, Leningradskaya hotel.
   Exit through the north underground ticket hall: to Leningrad and Yaroslavl railway terminals, to Kalanchevskaya station and Komsomolskaya ploshchad.