The embodiment of the invention discloses a performance testing method for replacing a siliceous material with glass fiber reinforced plastic recycling powder. Concrete comprises the following components: cement, lime, gypsum, aluminum powder paste, scrap iron, fly ash and a fan blade recycled material. According to the performance test method for replacing the siliceous material with the glass fiber reinforced plastic recycled powder, when the siliceous material is coal ash, the strength of an AAC product is reduced along with the increase of the mixing amount of the wind power blade recycled powder, the strength of the AAC product is increased along with the increase of the dry material amount, the replacement proportion is increased, the fluidity of slurry is reduced, and the water storage amount is increased; the strength decreasing proportion is gradually increased, and the strength of the prepared aerated block is in a decreasing trend; when sand is selected as the siliceous material, the strength and the compressive strength of the AAC product are improved along with the increase of the mixing amount of the recycled powder of the wind power blade; along with the increase of the dry material amount, the strength of an AAC product is gradually increased, and along with the increase of the mixing amount of wind power blade recycled powder, the water demand of slurry is increased, so that the standing time is prolonged, and the production is not facilitated.