Compound early strength agent for concrete

The invention provides a novel compound early strength agent for concrete. Compared with the prior art, the compound early strength agent for concrete has the advantages of low cost, easily-obtained, non-toxic and harmless raw materials, no pollution on the used environment, and impervious, anticarbon, anti-icing and cement-quickened hydration reaction, thereby obviously improving the compression strength of concrete in each age, efficiently preventing the corrosion action of chlorine ions to reinforcing steel, promoting the final setting of the concrete, and reducing the initial final setting time interval of the concrete. The compound early strength agent for the concrete consists of an early strength compound, a water reducing compound, a stabilizing agent and a modifying agent.