Moisture-proof and dust-proof doorway talkback host of building talkback system

The utility model provides a moisture-proof and dust-proof doorway talkback host of a building talkback system, which comprises a talkback host body, a card swiping sensor and a sound amplification hole, a key frame is arranged on the outer side wall of the talkback host body, the card swiping sensor is arranged at the bottom end of the key frame, the sound amplification hole is arranged on one side of the card swiping sensor, and the sound amplification hole is arranged on the other side of the card swiping sensor. A dustproof structure is arranged outside the sound amplification hole and comprises a dustproof cover, a hinge block, a fluorescent strip and a grip, the hinge block is mounted on one side of one end of the intercom host body, and the dustproof cover is mounted at the other end of the hinge block. According to the utility model, through the arrangement of the dustproof structure, a resident or a visitor can pull the dustproof cover outwards when using the structure, so that the doorway intercom h