PC insulation board

The utility model discloses a PC heat insulation board, and relates to the technical field of building boards, the PC heat insulation board comprises a heat insulation board body and a mounting box, a mounting groove is formed in the outer wall of one side of the mounting box, a fixing plate is slidably mounted in the mounting groove, and the fixing plate is fixedly mounted on the outer wall of the bottom of the heat insulation board body. Under the matching action of a pressing plate and the like, a pull rod is pushed to move so as to drive the pressing plate and two connecting plates to move along with the pressing plate, the two connecting plates move so as to drive two rotating plates to rotate and get away from each other, and then two sliding plates are driven to get away from each other and compress two telescopic springs; at the moment, the insulation board body can be installed on the installation box, then the fixing plate and the installation groove are connected in a clamped mode, the two pull rod