Mounting rack for prefabricated cable

The utility model discloses a prefabricated cable mounting rack, which comprises a support, a mounting plate is fixed on the top of the support, a connecting plate is fixed at one end of the support, a plurality of circular through holes are arranged on the mounting plate, a joint mounting plate and a blind plate are movably arranged on the circular through holes, and the mounting plate, the support and the connecting plate are all provided with a plurality of through holes. A plurality of circular through holes are designed into holes with different calibers, so that aviation plugs with different calibers can be conveniently inserted, the connector mounting plate is used for inserting square aviation plugs, the connector mounting plate can be flexibly mounted on the circular through holes at different positions of the mounting plate due to the movable design of the connector mounting plate, and the connector mounting plate is more convenient to use; one end of an optical fiber cable with an aviation plug is