The invention discloses an HBSY-KL type temperature-inhibiting, anti-cracking, anti-corrosion and waterproof additive for concrete. The HBSY-KL type temperature-inhibiting, anti-cracking, anti-corrosion and waterproof additive comprises the following raw materials in percentage by mass: 0.5-5% of nano-calcium silicate hydrate crystal seeds with a concentration of more than or equal to 0.05 mol / L,0.5-5% of modified nano-silicon dioxide, 1-5% of polyethylene glycol, 0.5-3% of citric acid or sorbitol, 0.3-0.8% of modified polystyrene, 0.5-2% of triisopropanolamine, 0.5-10% of sodium metasilicate, 1-6% of sodium hexametaphosphate or white sugar, 0.5-1% of a borate coupling agent, and the balance of water. By adopting the modified nano silicon dioxide and the modified polystyrene which are treated in a special modification mode, the compactness, the impermeability, the corrosion resistance and the waterproofness of the concrete can be effectively improved, hydration heat is inhibited, andthe early-stage strength and the later-stage strength of the concrete are improved.