Movable double-layer ceiling

The invention provides a movable double-layer ceiling. According to the technical scheme, the movable double-layer ceiling is characterized in that the movable double-layer ceiling comprises beams, reinforcement tubes, a formwork, light permeable films, black films and guide rails; the reinforcement tubes are respectively and fixedly connected to any beam, the beams are connected with one another through the guide rails, and the light permeable films and the black films are connected to the guide rails in a sliding mode. The movable double-layer ceiling has the advantages that the ceiling can be freely adjusted to open and close; due to the double-layer ceiling design, the day and night time in a greenhouse can be controlled; the advantages of surroundings and sunlight are effectively used, the ceiling can be closed according to the requirements, and the temperature difference and the sunlight difference are generated again inside and outside the greenhouse.