The utility model discloses an interlocking and LEU network deployment structure, including interlocking and at least one ground electronic unit, the interlocking be equipped with A system and B system just one of them to give first place to be that another is for be fully, the ground electronic unit be equipped with A system and B system just one of them give first place to be another for being fully, still include switch A, switch B, serial server A, serial server B, switch A and switch B are connected with serial server A and serial server B through the network respectively, communication connection between serial server A and serial server B and every the ground electronic unit. The utility model discloses one of well interlocking is through A, the two A that net redundant modes and LEU of B, and B is communication, the reliability is higher.