Mirror surface pressure maintaining jig

The utility model discloses a mirror surface pressure maintaining jig which comprises a bottom plate. A top plate; the carrier plate module is arranged on the bottom plate and is in sliding connection with the bottom plate, and at least one placement groove is formed in the carrier plate module; the first guide mechanism is connected with the top plate; the at least one pressing block is arranged between the top plate and the carrier plate module, and one placing groove corresponds to one pressing block; a first buffer piece is arranged at the bottom of each pressing block, and a through hole is formed in each first buffer piece; a plurality of second guide mechanisms, wherein one pressing block corresponds to one second guide mechanism; the at least one balancing weight is arranged above the top plate, one pressing block corresponds to one balancing weight, a connecting rod is arranged at the bottom of each balancing weight, and the bottom of each connecting rod penetrates through the top plate and the corre