Building waste composite material, production method thereof and application of building waste composite material to fireproof door

The invention relates to a building waste composite material and a production method thereof. The building waste composite material comprises building wastes, a fireproof material, a temperature-resistant plastic material and processing auxiliaries. The production method includes: rolling, grinding, crushing and drying the building wastes, adding the fireproof material, the temperature-resistant plastic material and the processing auxiliaries into the building wastes, and mixing at high speed to obtain a mixture under a certain temperature. The invention further relates to a fireproof door produced by the building waste composite material and a production method of the fireproof door. The fireproof door comprises a door frame and a door leaf. The door leaf comprises a door body and a hole sealing plate. The production method of the fireproof door includes: respectively forming the component profiles of the fireproof door, and cutting to obtain the components of the fireproof door according to the required siz