The invention discloses an additive of sintering material, and a light, high-strength and high-efficiency water-storage water-permeable sintered brick and a plate, wherein the raw material for preparing the additive of the sintering material comprises the following components in parts by weight: 80-90 parts of organic fiber, 7-15 parts of a pyrolysis gas generating material, 1 part of a dispersingagent and 2-4 parts of an isolating agent. The light, high-strength and high-efficiency water-storage water-permeable sintered brick and the plate are added with the additive as described above during preparation of blanks. According to the invention, the problems of high firing temperature, long firing time, high energy consumption, high cost and poor water storage and continuous water permeability of existing sintered common bricks and plates for construction are solved, and inorganic materials such as fly ash, shale, clay and the like are adopted to be compounded with the additive to firethe brick and the plate, the brick and the plate have the advantages of low firing temperature, short firing time, low energy consumption, low cost and the like, and at the same time, the fired brickand plate have the characteristics of high strength, light weight, good water storage and continuous water permeability and the like.