The utility model provides a frostproofing cabin of marine electric tracing door, including door frame and door leaf, the door leaf passes through hinge member and articulates on the door frame, the door frame includes the door frame body, and the edge of door frame body extends towards the door leaf and forms round backstop portion, and the position that is close to the edge on the door frame is equipped with the spacing cover of round, is equipped with electric heat tracing cable in the spacing cover, and spacing covering is equipped with the breach, and electric heat tracing cable's one end and binding post are connected, and the other end is connected with sealed terminal, and binding post and electrical control box are connected. The utility model discloses an electricity heat tracing cable can provide sufficient temperature, guarantees steel door ability normal use under extremely cold environment, the utility model discloses simple structure, for anti -icing and deicing mode in the past, it is reliable to have a working property, and the effect is showing, saves time and work load, satisfies up -to -date style each ship's classification society winter protection simultaneously and standardizes the requirement, and the sexual valence relative altitude is made, operation and installation safeguard simple and convenient advantage.